Identification chips type DS 1990 R F5. Checkpoints are placed in the object and they serve as check places. They mark the patrol route,that the guard must perform during the set time interval and in the exact order of points. They are inconspicuous and simply attachable. We recommend to stick them by cyanoacrylate or epoxid glue on the smooth surfaces. On the unequal surfaces we recommend special plastic holder with one central screw.