The smartphone apps, with a small attachment, can read blood-alcohol levels, predict when users will sober up, and even call a cab.
The credit can be applied to a new phone purchased with a two-year wireless contract or with Walmart’s prepaid plan.
Smartphones can do a lot of stuff at once, but they don’t always need to.
There’s evidence the NSA can access most online banking, medical and communications records, thanks to exploits that (hopefully) only it knows about.
So how does this wearable computer stuff actually work? Can it recognize photos? Does it record everything?
People seem to use their smartphones everywhere these days: In bed, during movies, at dinner. Is it too much? And will it ever stop?
Even if smartphone users avoid clicking on booby-trapped spam e-mails and downloading apps from rogue locations, they’re not entirely in the clear.