What's the use of giving a customer, client, or employee an ID card for any reason if you know it will just live, forgotten, stuffed in a wallet pocket for the duration of its life? Key tag cards are an effective way to keep plastic cards handy and useful. Instead of being relegated to the back of a wallet, key tags are a smaller, more basic form of identification that may be threaded through a key ring. Key tag cards are a great solution for the problem of the disappearing ID card. Customer loyalty cards for grocery stores and gym membership cards, if placed on key tags, can help up usage significantly just by keeping the card visible on the tag.