Abstract: A nuclear radiation detector included inside mobile personal communication devices (e.g. cellular or satellite phone, pager, PDA) allows for a network of portable radiation detectors that can not only detect radiation, but also track possible radiation sources by virtue of the ubiquitous nature of such personal communication devices. When radiation levels above a certain level are detected, the detector electronics embedded within any proximate mobile personal communication device communicates with the device to cause transmission of relevant data to the authorities (e.g., central reporting server monitored by FBI). The detection event is assessed by factors including, for example, quantity of alarms in a given area and radiation level detected. The small size of this embedded detector allow for its discreet configuration and monitoring at all times. The device is non-invasive and requires no user knowledge or action, thus eliminating indiscriminate and uncontrolled action by the user.

Abstract: The present invention discloses a device for locking firearms to prevent their discharge. The device is inserted into the barrel of a firearm and a locking element is inserted into the device to expand the diameter of at least a portion of the device. This causes a portion of the devices to be press or friction fit against the barrel of the firearm, thus locking the device and preventing discharge of the firearm. The device may also include a locking insert to which the locking element may be threadedly engaged in order to further ensure that the device is locked.