We didn't stand aside and got an unusual idea from a reader: to use a pen with disappearing ink to fill out parking tickets. This piqued our interest, and we decided to test this way of saving on parking. At a stationery store, we found two types of such pens: one erases with a rubber, the other disappears under heat, for example, from a lighter. At the "Pressa" kiosk, we bought several tickets, tried both options — crossed out, erased, burned — and were satisfied with the result.
When the ink disappears from fire, it looks like a real trick. One move of the lighter — and the ticket is clean again, not even traces of the pen remain. True, there is one point: such ink slightly damages the paint on the paper. We conducted the experiment ten times, filling in the same cells, and they noticeably faded. But to the naked eye, it's almost invisible, and hardly anyone would erase the same time that many times in a row. It's better, probably, to put crosses in the cells rather than fill them completely — the rules allow this.
The eraser, as it turned out, removes not only pencil but also paper along with the printing ink. We were afraid that the second pen with an eraser would spoil the ticket, but its ink is removed even easier than pencil marks. They are not too bright, but color doesn't matter here. The ink erases neatly, without traces. Only a small dent from the pen remains, but under the windshield, hardly anyone will notice it.
In the end, our reader's idea works perfectly. It's funny that pens with such ink are sold in the same "Pressa" kiosks where parking tickets are bought.
We, of course, don't call for anything — we just decided to check what would come of it.
