Finally, I reached the last station, where a machine fitted me with a security anklet—a padded metal band that locked around my ankle, just above the joint. According to the training film, this device monitored my physical location and also granted or denied me access to different areas of the IOI office complex. If I tried to escape, remove the anklet, or cause trouble of any kind, the device was capable of delivering a paralyzing electrical shock. If necessary, it could also administer a heavy-duty tranquilizer directly into my bloodstream.