Do you remember?
With the control bracelet, different groups of people, days or times are distinguished easily due to different colours . On Monday for example the red bracelet is valid, Tuesday the blue one and on Wednesday the yellow bracelet. Or, e.g., for people who wear a green bracelet, non- alcoholic drinks are free because they have to drive or they are not old enough to drink alcohol etc. etc. etc.
The control trap is available in the following 30 colours: