I'm looking for a device that can record GPS coordinate and save them to SD card, without the need for SIM card. I need this so I can tag my photos on laptop when I get home. GPS for my camer is too big, I want something I can put in my backpack and forget and only need to charge it once in a day (it would be nice if the batter last few days).
The only devices I've seen are GPS navigation with a map and spy devices or key,cat,doc,seniors localizators with sim card.
Ideal whould be device (small computer) that save single file each day to SD card. that can be read from SD card and processed. I already have script in python that tag my photos based on GPX or CSV files created using Android app called GPS logger.
Do you know any devices like this? I have GPS in my phone but I always forget to turn it on when I'm shooting photos, because GPS consume more power and I can't have it always turn on.