The security of concerts and the games of the 1st FC Cologne provides trained personnel and sophisticated technology in the Rhein Energie Stadium. For fourteen years, an electronic blueChip locking system from Winkhaus has been controlling access to different areas. blueSmart is now replacing the previous system – throughout the entire stadium. The innovative system also contributes to hygiene. By switching to the new technology, the operator, Kölner Sportstätten GmbH, gains greater flexibility and convenience. The advantages of the previous system are retained, however. The electronic blueSmart door cylinders are also flush-mounted and offer few points of attack for deliberate vandalism or accidental damage. This is just as important to the operator as reliability, not least because of the multifunctional use of the stadium: The cylinders offer secure documentation both indoors and outdoors and also function smoothly in colder seasons. blueSmart also scores highly in terms of hygiene. The fewer contact surfaces in the stadium, the better: With the electronic blueSmart key, users can operate doors without having to touch a knob, for example: Insert the key into the electronic cylinder and turn it - the latch retracts and the door can be opened. blueSmart keys are also resistant to disinfectants and can even withstand being washed in the washing machine thanks to their waterproof housing (IP 68).