Airlines offer loyalty programs to travelers through joining their cards etc. people who traveler frequently fur business or personal needs their rewards accumulation will take faster and after a sizable accumulation they can redeem the rewards (which could be in the form of air miles or shopping etc) to convert into tangible physical items. What percentage of travelers were frequent traveler and what percentage age of travelers were occasional. Occasional travelers do not accumulate fast enough to redeem, takes time, so these rewards can not expire in a short period of time, should never expire, just wait for redemption. Also occasional travelers might use a different airline every time they need to, which leaves little bit of rewards with several airlines which will not convert into redeemable rewards. Therefore not all the rewards points were used by the travelers. Cyber thievs might steal unused rewards points from the airlines systems. Since the usability comes after several ...
