I am 49 yrs old, i don't use credit/debit cards i go to bank directly and withdraw the money I need, I don't use smartphone my old nokia 3310 is better and i use padlocks and the best alarm system ever ( dogs ), the day i have to rely on a car that drive by itself i will better walk. Don't judge me because of my way to see life but technology go smart and hackers go smart too. I love technology but i am not blind about it.

i like how you sed this is not the lock picking lawyer

Isn't that still stealing the key and making a copy? Could you write some code to cycle through the codes instead? Of course, would need to be unencrypted and probably have a bit of time on your hands 🙂

The Intro is already legend!

This has to be my favourite one of your videos. I have played around a lot with RFID. I would like to try building a brute forcer that would just blast out RFID transponder codes until it got the right one. A good system should reject multiple attempts in a short space of time. An excellent system would detect it is being brute forced and increase the time between accepting new codes after a failed one. I bet you could build that in your sleep. In theory with a good waveguide and a small amount of amplification you could do this from a distance too. Like in a car parked outside a house. Why do this? Because it's fun.

Okay, I admit I haven't been over here for a little while and I feel bad about that. And yes, like all your other videos this one was super cool and informative. However, please put the old theme song back! I love that song with you building the LEDs.

You only get "great with wood-working" if you have the proper tools. Then it is easy.

You can write to nfc/rfd tags with a smart phone app

i would just add a button to the coil on the rfid tag, fiexed!

LF tags are ideal for implanting into pets as they are about the size of a grain of rice so don't cause irritation and the read range and security are not a problem. HF is still used, especially its NFC variant where security is more important and the slightly better read range is useful. In industry UHF is the most common standard now as it has a much better read range (even small hand held devices can read a few metres) and multiple tags can be read at once.

Do you have an inspiration to build an advanced lock using Yubikey + NFC + One Time Password, or even Yubikey + WebAuthn?

Try a modified LW receiver, able to receive 125kHz signals. I had this idea, got a receiver but never had enough time to experiment. Using a directional loop antenna, it should detect RFID signals in a much grater distance. Meters away?

Couldn't just keep the key in A RFID blocking case while not actively unlocking the door?

125kHz RFID security is a joke. Like WEP for WiFi. For better security, use 13.56MHz cards with built in encryption.

Use a plastic ruler with coils.

Make a short range rfid listener. Not a reader, just something that listens. Stick it into a nice looking box with a small circuit that stores read values and sends them to you via a simcard. Stick a battery in it and stick it with a sticky tape underneath the reader.

Low chance that anyone will think anything of it.

Security is more a game of deterrence than anything else, and so you weigh everything from the value to bad actors to the (in)convenience for the valid users and find a solution that is sufficient for the scenario.

I think the biggest takeaway should be “just because it has a computer in it doesn’t mean it’s automatically more secure than other options”, and that is something we would all do well to remember.

I just use a simple android app to copy RFID tags.

Fun fact: the "CE" mark you can see on the locking mechanism is not in fact the European Conformity mark, but the "China Export" mark. The difference? The spacing of the real CE mark are NOT jammed up against each other.