I was reading some threads talking about malware attacks and clipboard virus so I thought of using something new to protect Bitcoin address, though I'm still anticipating a cold wallet to use this method on but I thought of sharing it. I don't know if this belongs here or beginners and help.
So as when your bitcoin address is requested you can just send the image for scan to prevent your Bitcoin address from being tempered with. I also thought of how easy it would be for businesses that uses Bitcoin as payment method. It could be printed out and pasted on points where it can be scanned easily.
Although there could be some negative effect of this action but at least it's a good ideal from my perspective.
I don't think QR codes provide any better protection to your wallets. I also see that you mentioned cold wallets, if you are talking about storing your private keys in a QR code, that will be the worst and most craziest idea to ever attempt – I'm saying this will all sincerity of purpose — because I QR Codes are never a safe way of securing your private keys neither is it an alternative to cold wallets.
In fact, even though we've seen bitcoin exchange platforms like Binance and Trust wallet that gives you the option of using QR codes to replace your address, I think it is mostly provided to serve as an easy way to allow your a sender send you funds to your wallets without having to copy your wallet address. In that regards, one could encourage you to use QR codes especially as you are scared of the sender mistakenly tempering with your address which are represented in hexadecimals. I can encourage the use of QR Codes in P2P transactions especially when they are closed transactions.
For public transactions, which includes a situation when you have to drop your wallet address in a public space, I can advise that you use your wallet address instead of the QR Code as people can manipulate your QR Codes to theirs and you will not notice the difference. But at least, once there's a change in your wallet address, you can easily detect that.
LASTLY, DO NOT USE QR CODES TO STORE YOUR PRIVATE KEYS, IT'S ONLY EXPOSING YOUR KEYS TO HACKERS WHO CAN MANIPULATE YOUR QR CODES.