Salt ─ Keyless entry for your phone

For anyone who wants a little extra security but without having to enter in a pin code every time they want to use their phone, Salt's keyless entry card is the answer. It basically unlocks your device when you are within 10-feet, saving you the hassle. Walk away and your phone locks as usual. It is the size and shape of a credit card so you can just put it in your wallet and works with an easy to use app. No wonder it smashed its US$50,000 goal.