Tags are ideal for key rings. For our TV remotes that we lose all the time and have round backs, we have to clumsily stick labels around the TV remote buttons as the included velcro is not strong enough / wide enough for round backed remotes. We can still press the buttons on the TV remote, but the installation doesn't look aesthetically pleasing. My phone is the same, I just stick it on the case and put the phone back, but now I can't put the phone on my back. I don't have a perfect way to attach it to my wallet. You have to get creative when attaching tags to bulky/round items in a way that they can't be easily removed. While you don't mind the look of labels clumsily stuck to bulky/round items, they work like a charm.
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