21Ağu
How long should 2 factor authentication codes be?
I've noticed that many services that offer 2 factor authentication have jumped from using four digits to six. However, it seems counterproductive to me because the digits are random, the digits (should) expire, and with six digits, you may have to look at your phone twice or more
Is there any reason for this, beyond it seeming more secure? My preference would be four or even three digits as they are easier to remember and re-enter.
