And election officials in Mexico and Uganda are using it to prevent double voting.
And state officials are struggling to prevent double-digit premium increases next year.
Most industrial countries have also eliminated exemptions to prevent double taxation of dividends.
The pinkie finger of each voter was supposed to be marked to prevent double voting.
Imbalance between the muscles that keep the eyes parallel leads to fatigue in the constant effort to prevent double vision.
But their fears were compounded by having election workers mark one finger with indelible ink, something intended to prevent double voting.
Threats to cut off fingers marked with the indelible ink used to prevent double voting turned out to be almost entirely baseless.
In theory they are established to prevent double taxation – where income is taxed in two jurisdictions – but in practice many agreements limit the tax poorer nations can place on companies doing business within their borders.
Take the Dorothy Gray Patter, a round slice of rubber stuck on the end of a footlong handle; women were instructed to pat their faces with the rubber end to stimulate muscles and prevent double chins.
Some Kurds discovered that the ink used to prevent double-voting was actually quite delible if you first dipped your finger in moisturising cream.American army officers say that the insurgents were less effective than had been feared, for two reasons.
