Abstract: A locator beacon, method and system for identifying a first-in-line device, including: a first antenna configured to send a first signal; a second antenna configured to send a second signal and spaced apart from the first antenna such that a delta value between a first Received Signal Strength Indicator (RSSI) value of the first signal and a second RSSI value of the second signal measured at a predefined location, is within a range of values; a receiver for receiving wireless signals configured to receive an authentication signal from a mobile device adapted to measure the first and second RSSI values, the authentication signal including authentication data related to the measured RSSI values; and a processing unit, configured to determine whether the mobile device is the first-in-line device based on whether a delta value between the first RSSI value and the second RSSI value is within a predefined value range.

Abstract: Devices and systems using Bluetooth Low Energy (BLE) to facilitate sale transactions are disclosed. The devices can be in the form of a credit card, debit card, smart phone, wearable device such as a watch or glasses. A virtual payment card can store information relevant to a plurality of preexisting accounts and can provide outputs that include wirelessly communicating account information to a wireless device such as the emulation device, programming a dynamically alterable magnetic strip to include magnetized sectors that are magnetized in a fashion that reflects account information, and a visual output of the transaction card whose relevant card information has been communicated wirelessly or to the magnetic strip.

Abstract: A locator device and system including (a) a beacon, configured to be located via a wireless means; and (b) an adhesive means, adapted to adhere the beacon to a substantially flat surface, wherein the beacon is configured to be tracked by a mobile device running a mobile application adapted to locate the beacon via the wireless means.

Abstract: A device and method including: an energy consumption sensor; a wireless communications component adapted for wireless communication; a processing unit, adapted to receive energy consumption data from the energy consumption sensor and transmit the energy consumption data via the wireless communications component; and a switch having: a closed state coupling the input end of the device to the output end of the device, and an open state, disconnecting the input end of the device from the output end of the device.