3 ms·
One advantage of, say, a hash function over (pseudo)random numbers is that the same input guarantees the same output. It doesn't seem that important in the cas
by aneesh 18y ago
One advantage of, say, a hash function over (pseudo)random numbers is that the same input guarantees the same output. It doesn't seem that important in the case of gift cards, though.
- eli 18y agoI suspect it has more to do with the limitations of point of sale systems.