Student Time Logger

[New Lightning]

When I was with team 1987 as a student when used a program, I don't know who wrote it, but whenever we came to a meeting or were working at the build site we entered out own 4 digit number to log in and the program kept track of the number of hours we were at the shop. When we left the meeting/ shop we would enter our number again to log out. Similar thing, how did you do the bar code, did each person get a card with a unique bar code and they just scanned it whenever the arrived and left?