95 key blank

[OlemTheGolem]

Hi! My a8 only came with one key, an IR one with a semi crooked blade. Local dealer wants ~250£ for a replacement IR one. I have found other key blanks that looks like the same blade, Will these work or are there a electronic chip system that will not work with the keys from the likes of Audi 90,100,200 etc?
On my old 96 Volvo 850, all keys needed to be programmed to work with the ignition.

I don't need the remote part, I just want more keys in case I loose the one I have.

Thanks
Ole