On Thursday morning, I listened to an interview with the CEO of “a big data intelligence company” called Dstillery; it “demystifies consumers’ online footprints” to target them with ads. The CEO told public radio program Marketplace something astounding: his company had sucked up the mobile device IDs from the phones of Iowa caucus-goers to match them with their online profiles.
“We watched each of the caucus locations for each party and we collected mobile device IDs,” Dstillery CEO Tom Phillips said. “It’s a combination of data from the phone and data from other digital devices.”
Dstillery found some interesting things about voters. For one, people who loved to grill or work on their lawns overwhelmingly voted for Trump in Iowa, according to Phillips.
When I heard this, I wondered how the company was doing this. Did they have employees at all the caucus locations holding phone-sniffing devices? The idea that phone-toting people could walk up to vote and immediately have their real world identities matched with a profile based on their digital trail would indeed be, as Marketplace headlined its piece, a “new frontier in voter tracking.”
But that’s not how it works. The pairing of caucus-goers with their online footprints was more roundabout than that, explained a Dstillery spokesperson by email.
What really happened is that Dstillery gets information from people’s phones via ad networks. When you open an app or look at a browser page, there’s a very fast auction that happens where different advertisers bid to get to show you an ad. Their bid is based on how valuable they think you are, and to decide that, your phone sends them information about you, including, in many cases, an identifying code (that they’ve built a profile around) and your location information, down to your latitude and longitude.
Yes, for the vast majority of people, ad networks are doing far more information collection about them than the NSA -- but they don’t explicitly link it to their names.
So on the night of the Iowa caucus, Dstillery flagged all the auctions that took place on phones in latitudes and longitudes near caucus locations. It wound up spotting 16,000 devices on caucus night, as those people had granted location privileges to the apps or devices that served them ads. It captured those mobile IDs and then looked up the characteristics associated with those IDs in order to make observations about the kind of people that went to Republican caucus locations (young parents) versus Democrat caucus locations. It drilled down farther (e.g., "people who like NASCAR voted for Trump and Clinton") by looking at which candidate won at a particular caucus location.
As USA Today noted, “the results are interesting, if scientifically inexact.”
Because I think this is a fascinating look into how online and offline tracking can be combined, here’s the full Q&A:
Fusion: How did Dstillery gather mobile IDs from phones in Iowa?
Dstillery: For most ads you see on web browsers and mobile devices, there is an auction among various programmatic advertising firms for the chance to show you an ad. We are one of those buyers, and we are sent a variety of anonymous data, including what kind of phone you have, what app you are using, what operating system version you’re running, and sometimes -- crucially for this study -- your latitude and longitude (lat/long). We identified the caucusing locations prior [to] the Iowa caucus and told our system to be on the lookout for devices that report a lat/long at those locations during the caucus.
So when we received an ad bid request that our system recognized as being at one of the caucus sites, our system flagged that request and captured that device ID so we could use it for this.
This is roughly equivalent to exit polling for the smart phone age.
Fusion: How many caucus locations did it gather from?
Dstillery: We gathered data from across ~90 percent of the caucus sites for both parties.
Fusion: How many mobile IDs was it able to match to its database?
Dstillery: We identified about 16,000 devices at the various caucus sites.
[Editor’s note: Approximately 350,000 Iowans caucused.]
Fusion: Which mobile ID does Dstillery use for consumer tracking?
Dstillery: We use the anonymized advertising IDs provided by the devices themselves as identifiers in our system. Generally speaking this means Android’s Advertising ID or iOS’s IDFA.
Fusion: What’s the range of information associated with a mobile ID?
Dstillery: The data we receive from those auction messages is fairly limited. To build out that rich information set that you are referring to (we call them "Crafted Audiences"), we need to see a device several times across many different sites. We then use some pretty sophisticated machine learning techniques to extrapolate behaviors. We can only do this because we see such a broad view of digital behavior. In other words we know that seeing you on sites A, B and C mean that you are likely a "New Mom," but seeing you on A, D and E mean that you are "Health Conscious."
We have hundreds of crafted audiences – including credit checkers, wrestling fans, new movers, CEOs and even things like DIYers and cigar aficionados. And generate more crafted audiences all the time.
One thing that isn’t in the data is personal identifiable information. The data and system are completely anonymous. We have no idea, for example, what your name is. All we see are behaviors and everything we do is based on analyzing those behaviors writ large.
Fusion: Does Dstillery do its real world association of mobile IDs with consumer attributes in other settings or was this a one-off?
Dstillery: This application is an extension of what we do every day in our core business. Our entire mission as a company is to find the right consumer at the right time with the right message. We had to do some special setup and analysis due to the caucus dynamics, but this sort of experiment -- seeing things in the data that no one else has before -- is our bread and butter.
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Democratic presidential candidate, Sen. Bernie Sanders, I-Vt, and his wave Jane acknowledge the crowd as he arrives for his caucus night rally in Des Moines, Iowa, Monday, Feb. 2, 2016.
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Democratic presidential candidate Sen. Bernie Sanders, I-Vt., arrives for a caucus night rally on Monday, Feb. 1, 2016, in Des Moines, Iowa.
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Republican presidential candidate, Sen. Ted Cruz, R-Texas, arrives for a caucus night rally, Monday, Feb. 1, 2016, in Des Moines, Iowa. Cruz sealed a victory in the Republican Iowa caucuses, winning on the strength of his relentless campaigning and support from his party's diehard conservatives.
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Republican presidential candidate, Sen. Ted Cruz, R-Texas, speaks during a caucus night rally, Monday, Feb. 1, 2016, in Des Moines, Iowa.
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Democratic presidential candidate former Secretary of State Hillary Clinton speaks to supporters as Former U.S. president Bill Clinton and daughter Chelsea Clinton look on during her caucus night event in the Olmsted Center at Drake University on February 1, 2016 in Des Moines, Iowa. Clinton defeated Democratic presidential candidate Sen. Bernie Sanders (I-VT) to win the Iowa Democratic caucus.
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Democratic presidential candidate former Secretary of State Hillary Clinton speaks to supporters as Former U.S. president Bill Clinton and daughter Chelsea Clinton look on during her caucus night event in the Olmsted Center at Drake University on February 1, 2016 in Des Moines, Iowa. Clinton defeated Democratic presidential candidate Sen. Bernie Sanders (I-VT) to win the Iowa Democratic caucus.
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Republican presidential candidate, Sen. Marco Rubio (R-FL) plays with his kids after addressing supporters at a caucus night party at the Marriott hotel on February 1, 2016 in Des Moines, Iowa. Republican and Democratic candidates for President of the United States are awaiting the first primary voting in the 2016 Presidential Election.
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Republican presidential candidate, Sen. Marco Rubio (R-FL) acknowledges the crowd after addressing supporters at a caucus night party at the Marriott hotel on February 1, 2016 in Des Moines, Iowa. Republican and Democratic candidates for President of the United States are awaiting the first primary voting in the 2016 Presidential Election.
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Republican presidential candidate, Ben Carson speaks to supporters at his campaign's caucus night rally, Monday, Feb. 1, 2016, in West Des Moines, Iowa.
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Republican presidential candidate, businessman Donald Trump blows a kiss after speaking at his caucus night rally, Monday, Feb. 1, 2016, in West Des Moines, Iowa.
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Supporters cheer during Democratic presidential candidate Sen. Bernie Sanders' (I-VT) caucus night party Feb. 1, 2016 in Des Moines, Iowa. Sanders and former Secretary of State Hillary Clinton were locked in a tight race with caucus goers late in the evening.
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Supporters cheer during Democratic presidential candidate Sen. Bernie Sanders' (I-VT) caucus night party Feb. 1, 2016 in Des Moines, Iowa. Sanders and former Secretary of State Hillary Clinton were locked in a tight race with caucus goers late in the evening.
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People embrace as Republican presidential candidate Sen. Ted Cruz (R-TX) is declared the winner at the caucus night gathering at the Iowa State Fairgrounds on February 1, 2016 in Des Moines, Iowa.
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Republican presidential candidate Donald Trump speaks at his Iowa Caucus night gathering Feb. 1, 2016 in Des Moines, Iowa. Sen. Ted Cruz (R-TX) has won the Iowa Republican Caucus.
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People cheers as Republican presidential candidate Sen. Ted Cruz (R-TX) is declared the winner at the caucus night gathering at the Iowa State Fairgrounds on February 1, 2016 in Des Moines, Iowa. Businessman Donald Trump was polling second late in the contest while U.S. Marco Rubio (R-FL) was a close third.
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Supporters watch as results are displayed on a television during the caucus night event of Democratic presidential candidate former Secretary of State Hillary Clinton in the Olmsted Center at Drake University on February 1, 2016 in Des Moines, Iowa. Clinton, Sen. Bernie Sanders (I-VT) and Martin O'Malley are competing in the Iowa Democratic caucus.
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Ballots are counted following the Republican party caucus in precinct 317 at Valley Church on February 1, 2016 in West Des Moines, Iowa. The Democratic and Republican Iowa Caucuses, the first step in nominating a presidential candidate from each party, take place today.
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Supporters watch as results are displayed on a television during the caucus night event of Democratic presidential candidate former Secretary of State Hillary Clinton in the Olmsted Center at Drake University on February 1, 2016 in Des Moines, Iowa. Clinton, Sen. Bernie Sanders (I-VT) and Martin O'Malley are competing in the Iowa Democratic caucus.
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Supporters watch as results are displayed on a television during the caucus night event of Democratic presidential candidate former Secretary of State Hillary Clinton in the Olmsted Center at Drake University on February 1, 2016 in Des Moines, Iowa. Clinton, Sen. Bernie Sanders (I-VT) and Martin O'Malley are competing in the Iowa Democratic caucus.
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People watch a television showing the Caucus return numbers at the Donald Trump for President Caucus Watch Party at the Sheraton Hotel on February 1, 2016 in Des Moines, Iowa. Democratic and Republican Presidential candidates await the caucus returns from the first step in nominating a presidential candidate from each party.
Joe Raedle via Getty Images
People watch a television showing the Caucus return numbers at the Donald Trump for President Caucus Watch Party at the Sheraton Hotel on February 1, 2016 in Des Moines, Iowa. Democratic and Republican Presidential candidates await the caucus returns from the first step in nominating a presidential candidate from each party.
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A caucus attendee tallies votes at a Republican Party Caucus at Keokuk High School on February 1, 2016 in Keokuk, Iowa. After months of fierce campaigning, Iowans take the first steps in deciding which candidate will receive their respective party nomination for the US presidency.
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Ballot tallies are announced during the first-in-the-nation Iowa caucus in the Brody Middle School cafeteria in Des Moines, Iowa, U.S., on Monday, Feb. 1, 2016. Iowans headed to statewide Republican and Democratic caucuses on Monday night with the assignment of rendering an initial verdict of the 2016 presidential campaign.
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Paper ballots are counted during the first-in-the-nation Iowa caucus in the Brody Middle School auditorium in Des Moines, Iowa, U.S., on Monday, Feb. 1, 2016. Iowans headed to statewide Republican and Democratic caucuses on Monday night with the assignment of rendering an initial verdict of the 2016 presidential campaign.
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Caucus attendees sign in as they arrive at a Democratic Party Caucus at Jackson Township Fire Station on February 1, 2016 in Keokuk, Iowa. After months of fierce campaigning, Iowans take the first steps in deciding which candidate will receive their respective party nomination for the US presidency.
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Paper ballots for Donald Trump, president and chief executive of Trump Organization Inc. and 2016 Republican presidential candidate, are organized during the first-in-the-nation Iowa caucus in the Brody Middle School cafeteria in Des Moines, Iowa, U.S., on Monday, Feb. 1, 2016. Iowans headed to statewide Republican and Democratic caucuses on Monday night with the assignment of rendering an initial verdict of the 2016 presidential campaign.
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Caucusgoers look on as a representative for Senator Ted Cruz, a Republican from Texas and 2016 presidential candidate, speaks during the first-in-the-nation Iowa caucus in the Brody Middle School auditorium in Des Moines, Iowa, U.S., on Monday, Feb. 1, 2016. Iowans headed to statewide Republican and Democratic caucuses on Monday night with the assignment of rendering an initial verdict of the 2016 presidential campaign.
JIM WATSON via Getty Images
Supporters of Republican presidential candidate Donald Trump watch as the first poll numbers come in to the Trump Caucus Watch Party in West Des Moines, Iowa, February 1, 2016. Iowans started voting in the opening test of the US presidential race, with Republican Donald Trump looking to capitalize on his stunning campaign success and Hillary Clinton defending her status as the Democratic favorite.
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Aaron Miller, of Des Moines, cheers for Democratic presidential candidate Sen. Bernie Sanders (I-Vt.) during caucus night at the State Historical Society of Iowa on Monday in Des Moines, Iowa. Precinct 47 went to Sanders with a 84-83 result.
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Supporters of Democratic presidential candidate Sen. Bernie Sanders (I-Vt.) celebrate as Sanders wins precinct 47 with a vote of 84-83 during caucus night at the State Historical Society of Iowa on Monday in Des Moines, Iowa.
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Supporters cheer before the start of caucus night at the State Historical Society of Iowa, on Monday in Des Moines, Iowa. Precinct 47 went to Democratic presidential candidate Sen. Bernie Sanders (I-Vt.) with a 84-83 result.
Alex Wong via Getty Images
Democratic presidential candidate Sen. Bernie Sanders (I-VT) (L) watches a broadcast of the caucus with his wife Jane O'Meara Sanders (R) in their hotel room prior to a caucus night party February 1, 2016 in Des Moines, Iowa. Residents of Iowa vote for the Republican and Democratic nominees at the caucuses this evening.
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Attendees of Republican presidential candidate, Sen. Ted Cruz's, R-Texas, caucus night rally watch as returns are displays, Monday, Feb. 1, 2016, in Des Moines, Iowa.
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Democratic presidential candidate Sen. Bernie Sanders (I-VT) (2nd R) waits for caucus results with his wife Jane O'Meara Sanders (R) and other family members in their hotel room prior to a caucus night party February 1, 2016 in Des Moines, Iowa. Residents of Iowa vote for the Republican and Democratic nominees at the caucuses this evening.
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IOWA, USA - FEBRUARY 1: Iowans register to cast their ballot in the 2016 Iowa Caucus at one of three precincts in Ames High School in Ames, Iowa, USA on February 1, 2016. Today the citizens of Iowa cast the first official ballots in the 2016 race for the Presidency. (Photo by Samuel Corum/Anadolu Agency/Getty Images)
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A supporter of Hillary Clinton hands out sticks at the entrance to their precinct at Ames High School which hosts three different precincts, two Democrat and one Republican, in Ames, Iowa, USA on February 1, 2016. Today the citizens of Iowa cast the first official ballots in the 2016 race for the Presidency.
Joe Raedle via Getty Images
People watch a television showing the caucus return numbers at the Donald Trump for President Caucus Watch Party at the Sheraton Hotel on February 1, 2016 in Des Moines, Iowa. Democratic and Republican Presidential candidates await the caucus returns from the first step in nominating a presidential candidate from each party.
Joshua Lott via Getty Images
Tim Willard holds a campaign sign during a campaign event for Republican presidential candidate Donald Trump at the U.S. Cellular Convention Center on Monday in Cedar Rapids, Iowa. Trump, who is seeking the nomination for the Republican Party, attends his final campaign rally ahead of tonight's Iowa caucus.
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Home-made cookies baked by a volunteer are displayed at a campaign event for Sen. Ted Cruz, a Republican from Texas and 2016 presidential candidate, at the Greene County Community Center in Jefferson, Iowa, on Monday.
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A man holds a picture of Republican presidential candidate Donald Trump at the rope line during a campaign event at the U.S. Cellular Convention Center on Monday in Cedar Rapids, Iowa.
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Hayley Kibbe holds her 8-month-old son Beau at Republican presidential candidate Donald Trump's Iowa Caucus night gathering February 1, 2016 in Des Moines, Iowa. The U.S. presidential election kicks off today with voters taking part in the Iowa Caucus.
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WEST DES MOINES, IA - FEBRUARY 1: The shadows of caucus goers lined up outside a Democrat Party caucus can be seen on the walls of Maple Grove Elementary in West Des Moines, Iowa. According to the most recent Des Moines Register poll former Secretary of State Hillary Clinton holds a slight lead over Sen. Bernie Sanders (I-VT). (Photo by Stephen Maturen/Getty Images)
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Republican presidential candidate Donald Trump attends a Republican caucus on February 1, 2016 in West Des Moines, Iowa. Democratic and Republican Presidential candidates await the caucus returns from the first step in nominating a presidential candidate from each party.
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A campaign staffer wears patriotic pants while exiting the bus at a campaign stop for Sen. Ted Cruz (R-Texas) not pictured, at the Greene County Community Center in Jefferson, Iowa, on Feb. 1.
Bloomberg via Getty Images
The autograph of Donald Trump, president and chief executive of Trump Organization Inc. and a 2016 Republican presidential candidate, appears on a campaign button during an event in Cedar Rapids, Iowa, on Feb. 1. Trump's "I'll-say-whatever-I-want" style works in Iowa, where he led Republican polls ahead of Monday's caucuses, the first electoral event of the 2016 presidential election.
Stephen Maturen via Getty Images
Molly Maddux, of Euless, Texas, makes calls on behalf of Republican presidential candidate Sen. Ted Cruz (R-Texa) at his headquarters in Urbandale, Iowa. Volunteers will continue calling up until the caucuses open tonight at 7 p.m. local time.
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Republican presidential candidate Donald Trump, center, accompanied with wife, Melania, second from right, pauses for a selfie while visiting Saint Francis of Assisi Church, a caucus site, on Monday in West Des Moines, Iowa.
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Republican presidential candidate Sen. Marco Rubio, R-Fla., waits to speak at a caucus site, Monday, Feb. 1, 2016 in Clive, Iowa.
Alex Wong via Getty Images
A portrait of Democratic presidential candidate Sen. Bernie Sanders (I-VT) is seen at his campaign headquarters February 1, 2016 in Des Moines, Iowa. Residents of Iowa will vote for the Republican and Democratic nominees at the caucuses this evening.
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A volunteer makes calls to potential Rand Paul voters at his Des Moines headquarters on February 1, 2016 in Des Moines, Iowa. The Presidential hopeful visited the headquaters to thank all the staff and volunteers for all their hard work in Iowa.
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Political activist Lynda Farley, who calls herself 'Smoking Granny', sits for a photograph in her minivan outside an event for Senator Ted Cruz, a Republican from Texas and 2016 presidential candidate, not pictured, at the Greene County Community Center in Jefferson, Iowa, U.S., on Monday, Feb. 1, 2016.
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First time caucus participant Su Podraza-Nagle waits for the Democratic caucus to begin in Nevada, Iowa, Monday, Feb. 1, 2016.
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Janice Seibel sits in Democratic caucus room before caucusing begins in Nevada, Iowa, Monday, Feb. 1, 2016. Siebel hasn't desired who she'll caucus for.
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