Civics: If a Best Buy technician is a paid FBI informant, are his computer searches legal?

Tom Jackman:

At a giant Best Buy repair shop in Brooks, Ky., Geek Squad technicians work on computers owned by people across the country, delving into them to retrieve lost data. Over several years, a handful of those workers have notified the FBI when they see signs of child pornography, earning payments from the agency.

The existence of the small cadre of informants within one of the country’s most popular computer repair services was revealed in the case of a California doctor who is facing federal charges after his hard drive was flagged by a technician. The doctor’s lawyers found that the FBI had cultivated eight “confidential human sources” in the Geek Squad over a four-year period, according to a judge’s order in the case, with all of them receiving some payment.