Use Groupon coupon code VISA5 during checkout. Groupon has this Bluetooth Keychain Key Tracker for $7.99 after instant savings. Use the promo code at checkout and the price drops to $7.59. Shipping is $3.99. Choose from four colors and keep track of your keys and other valuables with a free tracking app. This key tracker previously sold for $39.99. This deal is available for a limited time.