The "contact Roamler" thing is just Roamlers way of trying to be cute, it has as much use as a chocolate fireguard!! In supermarkets etc... trust me the staff dont give a hoot about you, just be discrete.. never once been "caught" in an incognito job... Doing tasks in small shops, you are almost certain to get caught, those tasks are simply not worth doing, you will notice those kinds of task sitting untouched for weeks on end, the seasoned task app user wont touch them. If you should get approached in a Tesco etc.. by security guard, just fess up, even butter the guard up a wee bit "Oh well done on catching me, you are good at your job" etc..... Even coming up with stuff like oh i am taking pics for dear aunt gertie who isnt sure what she wants