@USGI: Always those EXIF readers . I know why I used to delete those in the past. Well, if you ruined your cam and prefer to spend your money rather on guns than on a camera you need to arrange (but it's not a easy thing to make good pictures with an iPhone).

I'm asking myself whether I should buy more of those (M2 receivers) as there are more available. Mainly I bought those as I thought they're available now, but what might be in the future.