Now there are so tesa Tack. Sounds like tacking, but it is located - be careful, New Germany - double-sided adhesive pads. According pack they are transparent, non-marking removable and reusable.
Yes, they are transparent. Similar Gelsticker they are between two sheets and can be individually removed. The shape is strange: they are in the middle of irregularly shaped hexagons seen at the edge of cut off with scissors so that they fit on the slide and are pentagonal. They have approximately the size of a fingernail.
The problem is that they do not stick well. On rough surfaces, on smooth, if a the feat is sometimes not only managed not to touch them. Tip: the note, which you want to stick anywhere, directly on the press tack, tack pull so of the foil and press directly on a smooth surface (the tack?). If the surface is clean and dust free, it works well with the re-use. However, only when the tack while sticking to the correct area. Do you have to touch that thing again with your fingers, it's all over. Posters on woodchip definitely not going.
Ever: poster. About 1 / 2mm high is the writing that gives the following information: DIN A5 = 1 Tack, A4 = 2 Tacks, A3 = 4 Tacks. I would double the numbers rather so that it holds. The adhesive force roughly corresponds to the adhesive on the back of post-its (with the same area). The above mentioned before Gelsticker stick much better generally.
That with the traceless detachment is nevertheless properly. Incidentally, on glass and on - here it could be interesting - screens. So, if you reach your loved ones only if you stick you note on mobile, PC or TV, then this is the right product for you!