That's testable, but if it turns out to have a benefit, you'll have to implement that effect on all tablets and phones, and make corrections more difficult (???).
However, I don't think it has a benefit: people don't correct themselves on tablet/phone, so I think the cost of a mistake is the same as on paper, namely 0, unless people are really more careful when writing.
However, I don't think it has a benefit: people don't correct themselves on tablet/phone, so I think the cost of a mistake is the same as on paper, namely 0, unless people are really more careful when writing.