I've been shooting high power for about 35 years. I'm a big fan of ther requirement of using data (score) books.
The keep a record of round count, zero changes, conditions at different ranges across the country, on and on.
In my 35 years I've shot in rain, snow, hot and cold. Personally I wouldn't trust an electronic device for recording data. Batteries go south, dust and rain aint good for such devices. Paper and pencil work in all conditions.
When shooting its easier with a pencil to mark the calls, shot placements, etc without getting out of position. Not sure that can be done with electronic devices.
In addition, I coached the AK NG Rifle team. It was a requirement that my shooters kept score books, and record everything posible. I furnished the score books to keep everyone on the same sheet of music. I just don't see electronic devices working.
CPT USAR Ret
USAMU Sniper School Oct '78
Distinguished Rifle Badge 1071