found the original this morning an decided to take it an see if i could make it smoother so it didnt hang on stuff as im pulling my keys out of my pocket. i havent even tried printing them just yet i just imagine with the text an bar code sticking up will be something that will snag on material. i could be wrong an this could have been for nothing but i rounded the edges of the keychain an made the center where u would place the code sunk into the model so when u add the code it will be flush with the top of the rest of the keychain. if u dont really know how to do this in tinkercad, go to the original an watch his video an it will give u a good idea. in this case instead of deleting the code from the keychain, make a new block that is just for the code an once u have deleted most of it leaving only the code left then u can place it where u want it. if u have trouble with this let me know an i'l lmake my own video showing how to do it but its pretty simple if u have played with tinkercad any.
here is the link to the original. i'll update with photos as i print them.
https://www.thingiverse.com/thing:4912072

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