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11/25/2013 11:31 am ET

Caregiving Goes Digital -- And Lets Boomers Age In Place

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Steadily and relentlessly, a feeling of anxiety spread among the four Pak sisters as they tried in vain to call their 80-year-old father, Song Pak.

"We were really starting to worry, because our mom was visiting us and he was alone," says Suzy Pak, 43, a financial consultant from San Francisco, whose siblings also live far from their childhood home near Santa Barbara. "Just before we called the police, he finally called us. He'd been gardening all day in the yard. So we decided we had to do something."

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