The fitting room operator signs equipment in and out. Honestly its a joke, we always end up with missing or broken equipment.
Our equipment control is actually really good. Each work center is assigned a specific amount of PDAs/LPDAs (ex. Pricing has 4 PDAs and 1 LPDA, Electronics has their own PDA, Hardlines has their own PDA, Softlines has their own PDA, EM has 5 PDAs assigned to them, etc). Another thing is that the Price Accuracy, Plano, and Instocks equipment are locked up in a separate cabinet and only those TLs have a key to it (not all the Execs have 1) and we respect each others equipment, where instead of just taking from one another in that cabinet, we first ask if there are any extras in case one team doesnt have everyone scheduled that day. Works out quite well, especially since we hold ourselves accountable for our own equipment
We used to take car keys in exchange for equipment. In lieu of that (for those who didn't have a car, which was may folks in a large Metro environment) we took IDs. To get the keys or IDs back they had to turn in the equipment or be prepared to have to pay for it being lost/missing. We seldom had problems with them returning the items.