This technique need only be done in a few places where bogus ballots are significant.
Republicans should be told to vote in person if possible.
Those that vote for Trump by mail should take a picture of the presidential page of their ballot, if possible, preferably with something unique such as a damaged furniture leg on the same image. If possible, e-mail that picture before the election is over to oneself.
Imagine if only 2000 people voted for Trump by mail in Philadelphia and there were 300,000 mail-in ballots.
After the first 2000 bogus mail back return envelopes are detected, then Kamala’s count should obviously be debited. With photographic proof of say 1700 Trump votes, then debiting might begin after the first 300 bogus mail backs.
You are not allowed to know how the machines operate and if you question the outcome you may be charged with attempting to overthrow the election. Great system hey?