Fake ELM327 compatible OBD-II Bluetooth adapters are a thing, especially the cheapest ones, as found out by one of our readers.
FORScan ELM327 OBD2 USB Adapter for Windows Diagnostic Coding Tool with MS-CAN/HS-CAN Switch for Cars Since 1996 : Everything Else
CVTz50 - How to buy proper ELM327 v1.5 OBD diagnostic interface
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FORScan ELM327 OBD2 USB Adapter for Windows Diagnostic Coding Tool with MS-CAN/HS-CAN Switch for Cars Since 1996 : Everything Else
China ELM327 WiFi adapter performance fixes procedure
キングダムハーツⅡ(とりあえず)クリア!(ネタバレ度大): HongKong-Angel-Diary
Bluetooth WiFi ELM327 OBD2 Adapter Scanner Reader for iPhone Android and iOS Phones with Free FASLINK X APP Bluetooth 4.2 ELM 327 OBD 2 Adapters Scanner Code Readers Diagnostic Scan Tools : Automotive
Dissection of a counterfeit ELM327 OBDII Adapter from China
CVTz50 - How to buy proper ELM327 v1.5 OBD diagnostic interface
ELM 327 bluetooth OBD2 adapter review and how to guide with torque pro android