I travel constantly. Sometimes with my camper, sometimes just with just a back-pack.

I have had much stuff on a USB drive for a long time. Started with a 256meg and now up to 2 gig. Mostly stuff "of record" that would help prove my history. Yes, there is some risk of it falling into the wrong hands, but it is encrypted so at least there is some barrier to its wrongful use.

I have a heart condition that changes over time. Being able to print or otherwise display old ECG (or EKG's which is it now?) on demand for a cardio doc to examine is worth the effort. Likewise shot records and other such stuff. Helps when encountering a new physician.

So far, no failures (why did I say that... now it will fail)... and I find it very comforting to have the data available. I think it outweighs the risk of identity theft.

I do not intend it as an emergency data source. Dog tags or medical alert tags perform that task better.

nomad