Locking device, comprising a lock (11, 42) and a user operating device (50), wherein the locking device comprising a first communication means, the user operating device (50) comprising a second communication means, the first communication means communicating with the second communication means over a short range Wireless communication protocol (3) and the user operating device (50) comprising a Third communication means for communicating with a service provider (1) over a long range communication protocol (4), the locking device further comprising a controller (40) for controlling the lock (11, 42), and a method and system for operation of an animal cage (10) comprising the locking device for pet parking.
