GOL Droid is the ultimate solution for controlling security personnel and their activities providing that you have an Android smartphone.
If the smartphone has NFC capability then you can use it as a guard tour wand, reading RF-ID tags attached to checkpoints and proving that the patrol officer was really there. But if your smartphone does not support NFC, you can use the camera for reading and decoding QR-Barcodes.
Check-points can be considered visited when the patrol officer reaches a GPS coordinate, which is useful to outdoors tours and inspections (in such case the smartphone needs GPS capability). And if the smartphone supports BlueTooth Smart, then you can create your own indoor private GPS infrastructure using small electronic devices offered by Contronics named CheckBeacon, which are very easy to set up.
GOL Droid brings together several distinct technologies, one of them will be perfect for you.