Is this the age of the smart wallet, or are they more trouble than they're worth?
If your smart wallet is lost or stolen, you can locate or track it with a smartphone. That's a cool idea, and it has attracted several crowd-funded projects such as Cashew, Ekster, SmartWallet, Walli, Wallor and Woolet. However, small, standalone trackers like TrackR's may do the job cheaper, and they're less risky purchases.