Editing Talk:1237: QR Code
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I've actually needed to do this once. I was browsing the web on my phone and it only displayed a QR code to download an app I needed. I wondered what the least number of mirrors required would be to achieve this. Assuming it doesn't read inverse images, it would be necessary to flip it on both axes. [[User:Keavon|Keavon]] ([[User talk:Keavon|talk]]) 05:36, 14 July 2013 (UTC) | I've actually needed to do this once. I was browsing the web on my phone and it only displayed a QR code to download an app I needed. I wondered what the least number of mirrors required would be to achieve this. Assuming it doesn't read inverse images, it would be necessary to flip it on both axes. [[User:Keavon|Keavon]] ([[User talk:Keavon|talk]]) 05:36, 14 July 2013 (UTC) | ||
: QR codes are invariant upon rotation, but not upon reflection. So yes, you'd need at least two mirrors (or any even number of them). [[Special:Contributions/88.24.184.87|88.24.184.87]] 17:09, 15 July 2013 (UTC) | : QR codes are invariant upon rotation, but not upon reflection. So yes, you'd need at least two mirrors (or any even number of them). [[Special:Contributions/88.24.184.87|88.24.184.87]] 17:09, 15 July 2013 (UTC) | ||
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::And you'd need to make a photo without changing the content of your screen. I think the solution with making a photo with a second device is still the easiest (assuming, you have one at hand) --[[User:Chtz|Chtz]] ([[User talk:Chtz|talk]]) 09:38, 16 July 2013 (UTC) | ::And you'd need to make a photo without changing the content of your screen. I think the solution with making a photo with a second device is still the easiest (assuming, you have one at hand) --[[User:Chtz|Chtz]] ([[User talk:Chtz|talk]]) 09:38, 16 July 2013 (UTC) | ||