Abstract: A flexible transmitter light bar and a flexible receiver light bar may be used, in conjunction with a controller, to prevent or reverse closure of a door, such as an elevator door, when an object blocks the transmission of light from the transmitter light bar to the receiver light bar. By using flexible light bars, shipping costs, storage footprints and installation efforts are significantly reduced as compared to rigid light bars currently in use. The light bars may be applied with an adhesive and may further include one or more mounting holes. The light bars may be sealed to be water proof and permit easy cleaning thereof. The light bars may be useful in retrofit applications as well as in newly installed doors.

Abstract: An apparatus and method for detection of uplink frequencies from a mobile device, such as a cell phone, may be used as an alarm for people not to use their mobile device, or may signal security personnel when an unauthorized mobile device is being used. The apparatus and method may measure the uplink frequency band and use feedback with the downlink frequencies to gain a better reading of the distance the mobile device being used is from the detection device The apparatus and method has more precision of distance compared to conventional detectors, as the uplink RF power of a mobile device changes depending where it's located from the cell tower transmitting the downlink data to the mobile device monitored.

Abstract: An apparatus and method for detection of uplink frequencies from a mobile device, such as a cell phone, may be used as an alarm for people not to use their mobile device, or may signal security personnel when an unauthorized mobile device is being used. The apparatus and method may measure the uplink frequency band and use feedback with the downlink frequencies to gain a better reading of the distance the mobile device being used is from the detection device The apparatus and method has more precision of distance compared to conventional detectors, as the uplink RF power of a mobile device changes depending where it's located from the cell tower transmitting the downlink data to the mobile device monitored.