Some other countries accept photographs as controls, whether GPS-tagged or not.
<photo of bike or person that includes the sign at ...>
Coming soon to the UK, when I get the paper work for the Cambrian Super Randonnee sorted out.
Unfortunately we don't tend to have neat little signs with the name of a Col and its height at the top of our climbs, its either a windswept bit of grass and heather that, in typical hill fog conditions looks like any other mountaintop, or a gate next to a stone wall set in a geologically unbelievable amount of soft gooey mud and day-old cow turd. So I've gone for statues of Welsh politicians, train stations, a castle and the occasional chapel.
The exercise has proved how much you can miss when entering a town after 60km of wilderness looking for an open cafe, as looking for suitable spots opened my eyes to the history and architecture of places such as Llanidloes.
At least a clock tower or a 200 tonne statue of Wellington is unlikely to disappear overnight as shops, pubs, and ATMs have a tendency to do these days.