yan 🐇random n00by question: say that i have a key card and already determined that it's not NFC. what's the easiest way to figure out what protocol it is using? assuming it is passive RFID, is there a DIY way to read it (like with an SDR)?
Bea@bcrypt if it or the reader you use it with has any name/branding on it, I've had success looking that up for specs (kinda obv but hey). Or use a Proxmark? After that SDR is an option.