A week with: Garmin Edge 810 bike satnav

Price: £379.99
Screen: 2.6-inch touchscreen
Battery life: 17 hours
Maps: Built in mapping and Ordinance Survey compatible
Connectivity: Automatic Bluetooth syncin

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I GPS tracked my wife, and it didn't feel good

As new gadgets are released that make it easier to track loved ones, the New York Times's Farhad Manjoo asks if we're in for a wave of family snooping. To see how it felt, he slipped a GPS tracker into his wife's car, another into his 2-year-old's diaper bag, and one more into his parents' vehicle for good measure.