Player link
Give this link to your players — they enter their code there and the games open.
Print it for the counter — players scan it, enter their code, and play.
Customer — add money / cash out
The player gives you their 4-digit code. Type it in — their name and balance show — then add money or cash them out.
Shift
Cash in $0.00Cash out $0.00Left = drop $0.00
Closing a shift saves this report for the owner and opens a new shift. The numbers come from the recorded money — nobody can type them in or change them after.