A method for verifying positions of a plurality of monitoring devices includes selecting a second monitoring device by a first monitoring device. A first number of monitoring devices out of the plurality of monitoring devices is supervised, the plurality of monitoring devices being positioned such that each monitoring device of the plurality of monitoring devices can be monitored by at least one other monitoring device of the plurality of monitoring devices. Correct positions of the plurality of monitoring devices have been determined and stored prior to verification, and security information for secure communication has been exchanged between two of the plurality of monitoring devices for all of the plurality of monitoring devices.