You could use an iPhone app. Here is an article from 2009 that mentions some https://www.cnet.com/tech/services-and-software/qr-code-readers-for-your-iphone/ ht

You could use an iPhone app. Here is an article from 2009 that mentions some https://www.cnet.com/tech/services-and-software/qr-code-readers-for-your-iphone/ https://www.cnet.com/tech/services-and-software/qr-code-read...