How many plastic store cards do you carry around with you either on your keychain or in your wallet. I have one for the various grocery stores and pharmacies that I shop at and the collection takes up considerable space in my wallet.The numi key is a small keychain device that solves that problem. It can read and store all of your different loyalty and membership cards into one convenient device. At checkout you just look up the card using the LCD display and then ‘beam’ your number into any laser scanner and you’re good to go. The numi key is available through amazon for $34.95.