Geocaching and my 73 year old father

My dad turns 73 this month. For Christmas, I bought him a GPS or Global Postioning device.,
I’ve now got him hooked on geocaching. Geocaching is like a big game of hide and seek but there’s more to it. He has found over 10 caches in his winter home of Lakeland, Florida. He planted his first cache this week. He calls me a few times a week to keep me updated. On my recent trip to Florida, we got to do several caches together. We had a blast.
Technology doesn’t know how old you are.