Maybe it's time those tin cans be phased out. Now, you can cheaply get a smart phone and tweet your location. In the old days, you had to climb to the top to be forced to find that stupid can and sign that book, by most. Nevermore.
Climb up as high as you feel, then provided some reception, use your phone to send out a signal. Some guy used to presumably call me from some summit, providing a sort of electronic proof that he was there. The carrier would then have the location triangulated or what, so then his signature.
Of course, no one need see or know who exactly is making the tweet, and one could easily bring up a digital voice recorder and play back a voice to be heard by the smart phone, presumably the person being there on the peak. Photos could be faked, ahead of time, of course, and so can video, by some, with major effort, though.
But then enviro philosophy dictates that is all civilization in the wilderness, having then no place there. And being that by many all that junk shouldn't be (toxic pollution). I'd love to be the recipient of some e-mailed photo sent from a summit right then and there, but then the good enviro wouldn't be caught dead with any such thing.
Few if any look at my website, as I do a lot of work getting my photos up right away, and presumed truth in pictures probably is taken with some skepticism. I won't be buying any smart phone anytime soon to tweet or e-mail from a summit, but the GPS on some would be helpful for my navigation, and the phone for a potential rescue call. Blah blah blah...