I want to track my distance ridden without any of my intervention and as discreet as possible.

I commute, run errands, tour and go about my life in general on a single bike and I'd like to keep track of kms to remind myself of service schedule and track component longevity.

I dont need to see my speed, my averages, maxes, time ridden, watts... Just check odo from time to time. I don't want aby displays on handlebars.

Is such a thing possibru fellas? Some sort of gps tracker maybe?