Hi Snowdog!
I completed 10 AR Lab caches while at Geo-Woodstock. On the way home I started to think about ways to use AR in my caches. First step was finding a free or inexpensive way to do it that didn't involve an app or creating an account because they are usually not allowed.
I found a website called youaugment.com. The program was easy to use. Upload a target image, click a button and the program uploaded the files to github and created a website.
Click the link on your phone, enable "allow camera", and point phone at target and see the AR.
Here is my test. Take a $1bill, aim your camera phone at it. It should show some AR on George Washington.
I submitted it to reviewer as a simple puzzle cache on Monday.
Today the reviewer finally responded saying there are guidelines for the AR test. I recreated the cache on the MetaVerse app. It works fairly well. could not get the GPS location part to work correctly. The HPreveal app didn't work at all, could not log in or create account.