Can we connect an RFID system to Facebook simply by implementing a login, or would we need to store Facebook user credentials?

—Name withheld

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Facebook has an application programming interface (API) that allows you to link an RFID tag to a person's login credentials, so once you create the links, reading an RFID transponder logs that individual into his or her Facebook account. This is useful for things like photo kiosks, where photographs are uploaded to a customer's Facebook page. So yes, you would need to store Facebook credentials and link them to an individual's RFID transponder.

By the way, it is my understanding that Facebook no longer allows users to simply read an RFID tag and "like" something. You can check in with an RFID-enabled badge or wristband, but you can't like a post in that manner.

—Mark Roberti, Founder and Editor, RFID Journal