The Leif smart card system is a tracking card that is placed inside billfolds to help consumers have a piece of mind and know the whereabouts of their wallet at all times. The Leift Card is creatively designed to look just like a credit card. Instead, the card is wirelessly connected to the user's smartphone and able to relay the wallet's precise location should it ever go missing.
Losing one's wallet can be a travesty for many -- especially when so many important documents and cards are located inside. The Leif Card offers a sleek and non-descriptive way to add a GPS to a wallet by adding a tracker to the accessory. The card connects to a joining app, allowing users to pull up the exact location of their billfold in realtime.
Leif is a Wireless Smart Card that Digitally Keeps Track of Billfolds
References: leifdoes & thegadgetflow