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“It was frustrating to me that nobody seemed to understand how essential it was to have a geotag to know where an elderly person was or to know where your chemo patient was staying,” Baltezore said.

For instance, users with precise location switched on will see options for locations nearer to them when trying to add a geotag to an Instagram Story or post.

Wagner and a group of undergraduate students volunteer their time to geotag and photograph the flags so mourners can find them digitally on the installation platform.

In March, Petito shared a photograph on Instagram with a geotag for the Appalachian Trail in Georgia.

Some popular tourist spots have tried to persuade influencers not to geotag their photos, lest followers try to recreate their shots and trample fragile ecosystems.