Stop people from pressing the wrong button

[rsammelson]

Stop people from accidentally signing in again instead of signing out. There should either be a warning, or it should count a in and then out when already signed in as just an out.

[boxofrox]

There are two situations to consider:

1. A user signs in, then forgets they signed in, and signs in again. They get credit from the first sign in until they sign out. The second sign in should be a no-op.

2. A user signs in. They forget to sign out. Much time elapses they should not get credit for, then they sign in again. The first sign in is a no-op (discard hours by policy), and the second sign in is counted.

How does the timeclock reliably differentiate these two situations from a single press of the sign in button? If a user forgets to sign out, then policy dictates no credit, and the automatic response of the timeclock should not countermand that.

The software does indicate the double sign-in (with an exclamation point, I believe). The feedback could certainly be more noticeable with a dialog showing the timestamps that conflict, so the user can ask us to make a correction.

It would be nice to have a slack channel for timeclock admins, and put a slack bot on the timeclock to notify the channel when a user signs in twice, or signs out twice. Even better, we can talk to the slack bot to fix times. /timeclock <name> <in|out> <date> <time> or something.