SeedHammer - My review 
Discussion
SeedSigner - The device is easy to use
I tested on SeedSigner and Jade.
SeedSigner managed to scan the QR code after several attempts. As for Jade, I was unable to scan the QR code. With the help of a black marker, I managed to increase the contrast of the QR code and scan it with Jade
Overall, I think this device is great for quickly creating single and multisig backaps on stainless steel. Operation is ridiculously simple (requires seedsigner to operate).
In general, I can recommend this product, considering that for scanning QR codes, it is worth getting a punch and manually punching out the QR code in the case of Jade, if you have SeedSigner, I think that increasing the contrast with a marker will be enough for trouble-free scanning.
My rating is:
7/10
ps. I spoke to the representative and found out that there will be a new and cheaper model in the future...