It seems that users cannot enter a vehicle registration 100% accurately.
We have recently released a small mobile web app which allows service
engineers/inspectors to enter a vehicle registration number and a pin
number to get service history for the vehicle.
We are getting around a 40% fail rate on the registrations for the
first time of entry. This drops to around a 1.5% error rate on the
Most of the time it is simply a case of 2 letters/numbers being
swapped. Sometimes a letter/number is entered for a number/letter.
Some of the registrations are private and don't obey any format (NOTE:
Trailer registrations aren't the same as vehicle registrations - they
can be anything the owner wants. In some cases we have them as
straight numbers - 1, 2, 3, etc.).
I'm looking for is a way to compare what they've entered against a
known list and to provide my 10 best guesses.
What I'm stuck on is what criteria do I use.
I think something like the old style colour Mastermind game (right
colour in the right place, right colour wrong place, wrong colour).
But that's going to be slow. One of the contracts has over 30,000
vehicles/trailers available to them.
Any suggestions really.
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