UUID

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UUID

(Universally Unique ID) A 128-bit unique number generated by various algorithms to identify hardware or software. Because the number is so large, for all intents and purposes no two UUIDs can be the same. The reason for UUIDs is that they can be combined from disparate sources into one database without fear of duplication. See GUID and OID.
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It works by using Bluetooth Low Energy proximity sensing to transmit a universally unique identifier that, when picked up by a compatible app, can be turned into a physical location and trigger a specific action on the device, such as sendingawelcomemessage,generate a discount voucher, unlock a hotel room door or even make a payment.
The Bluetooth SIG has released a Universally Unique Identifier (UUID) to the A4WP, as a first step, for adoption in its baseline system specification (BSS).
UUID (Universally Unique Identifier): Also known as GUID (Globally Unique Identifier), this is an identifier that is unique across both space and time, with respect to the space of all UUIDs.