This is the code that runs https://bandolier.learnjsthehardway.com/ for you to review. It uses the https://git.learnjsthehardway.com/learn-javascript-the-hard-way/bandolier-template to create the documentation for the project.
https://bandolier.learnjsthehardway.com/
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16 lines
1.1 KiB
16 lines
1.1 KiB
The FairPay component is more of a demo than an actual component. It shows how to use the
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`Paypal.svelte` and `BTCPay.svelte` components. The `FairPay.svelte` implements a "pay what you
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want" style of payments.
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Why the $10 increments? There's a form of credit card crime called "carding" where people with
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stolen numbers test their cards on any purchase that is $1. They'll get large numbers of possibly
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valid credit cards and they need to test them. The best way to test them is to attempt a very small
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purchase, and if the purchase works then they mark the card valid.
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If you allow people to pay any amount as a donation then carders will raid your purchase form and
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rack up $1 fraudulent charges. That may not seem to bad, but your payment processor will then
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charge _you_ $15 or more to handle the charge back. Even if you offer to refund the purchase and
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they do no work. This means if you receive $100 of fraudulent charges you would owe $1500 in fees.
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The easiest way to prevent this is to simply only allow increments of $10. $10 is too high for most
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carder testers, so this will deter them (at least until everyone does this).
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