We believe that documentation should be as simultaneous as possible to the physical animal transactions. In fact, we have not only given a lot of thought to this but have also developed solutions. For example, to achieve this simultaneous documentation we have developed a mobile, battery-operated worktable with monitor holders and integrated RFID readers for reading RFID-marked cage card holders and an integrated printer. In the end we had the problem that the printers and paper cutters in a clean room could not be operated reliably enough and the service in clean rooms showed to be complicated. Out of the necessity to solve this, the electronic cage card, which combines display, identification, signaling and a central control e.g. from the IT department, was born as the first step. In the continuation of this development, the web services and an application were created to combine colored buttons with a mobile app or the AMS and to communicate these “alerts” to the outside world. Now the notified user entering the animal room later, can see all cages, on which cages work must be done by seeing the LED flashes and the buttons.