Tip for those of us with ageing eyes

First, by way of background:   my eyesight is such that for most purposes I don't need to use reading glasses, although I do have a set that I occasionally use.   I like reading without glasses so much that when I had a cataract operation a couple of years back, I asked for the lens replacement to be a close focus one rather than the more commonly requested distance focus.  My reasoning is that I have been using glasses for distance for about 40 years, and find not having to use glasses in bed and at the computer to be useful. Unfortunately, the result with the new lens was not perfect, there's a bit of "ghosting" around letters.  Apparently, it is difficult for the pre-operation measurements of what an eye needs to be super precise.  However, my left eye, despite having the start of a cataract as well, still does close focus well enough that my brain seems to favour it when reading and working on the computer, and I can get away without glasses.  But super small print on products at the supermarket can still be a problem, and when you are counting calories for diet purposes, it can be annoying not being to read them properly.

 Now that I have bored everyone with the preamble, this is my tip I just realised:  instead of carrying around reading glasses all the time, there's a good chance your mobile phone camera can act as a de facto magnifier instead.   I just tried it with the "macro" lens on my camera, and it worked fine.

You can get magnifying glass apps for phones as well - but with these new phones with their super close focussing, you don't really need them. 

Maybe everyone else already though of this?   I don't think I have ever seen another shopper using their phone close to a label though...