The patent involves the use of a portable device with a universal serial bus connector and memory which can store the unique biometrics of its registered owner for the purposes of identification; record the biometrics of any person attempting to use the device; confirm whether the user is the registered owner of the device; control access to electronic devices; monitor and record the operational activity of its user; store pre-defined value, duration and budgetary constraints; compare activity to pre-defined values, durations and budgetary constraints; store monetary value; visually indicate when operative; be electronically locked and de-activated; and connect and communicate directly or remotely to other electronic devices.The device can be used for example in the identification and elimination of problem gamblers from gambling devices/services while either physically present at a gambling venue or through remote access via the internet, interactive television, intranets, extranets, telephones or other digital communication services.