This ultra-thin tracker can easily be slipped into your wallet and connects to your smartphone via Crowd-GPS en Bluetooth. This way, you can localize your wallet or bag at any point of time on a map. In addition to this, you can make your smartphone ring in case you have lost it.
The tracker card has the measurements of a credit card and uses solar power. When the card has been exposed to 3 hours of sun, it can last for a full two to three months.