The release of Bluetooth® Core Specification Version 5.4 earlier this year was met with a lot of excitement. Two features in particular, Periodic Advertising with Responses (PAwR) and Encrypted Advertising Data (EAD), have been enthusiastically received by the growing Electronic Shelf Label (ESL) market. In fact, annual Bluetooth ESL shipments are expected to be in excess of 334 million units by the end of 2027.
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