Looking at the comments I'm surprised no one posted the URL within the QR Code. I never scan QR codes with my phone, however when curiosity strikes me bad enough I will use a linux tool called zbarimg to scan QR codes. 9/10 times it'll just spit out a URL:
It's just a link to a png file. It's safe in the sense that your device will not get a virus but whomever is running the webserver at ipfs.io will know your IP address. It's just an rather long image (1275x29718 pixels) of text. I don't have too much time this morning to read it but it might be worth it. I did notice at the bottom of the image is text for a PGP public key. Anyone understand what the PGP signature is for?
Looking at the comments I'm surprised no one posted the URL within the QR Code. I never scan QR codes with my phone, however when curiosity strikes me bad enough I will use a linux tool called zbarimg to scan QR codes. 9/10 times it'll just spit out a URL:
The QR code in this postcard is no different:
https://ipfs.io/ipfs/QmdhNBL25WySAMW9rsohvC3QpVnFUocSiwCQcsuEvyeew8/image.png
It's just a link to a png file. It's safe in the sense that your device will not get a virus but whomever is running the webserver at ipfs.io will know your IP address. It's just an rather long image (1275x29718 pixels) of text. I don't have too much time this morning to read it but it might be worth it. I did notice at the bottom of the image is text for a PGP public key. Anyone understand what the PGP signature is for?
You need the key from the person to authenticate the pgp signature.
It's an oldschool way to authenticate an email someone sent you.