Money Matters
Dear Community,

Our tech team has launched updates to The Nest today. As a result of these updates, members of the Nest Community will need to change their password in order to continue participating in the community. In addition, The Nest community member's avatars will be replaced with generic default avatars. If you wish to revert to your original avatar, you will need to re-upload it via The Nest.

If you have questions about this, please email help@theknot.com.

Thank you.

Note: This only affects The Nest's community members and will not affect members on The Bump or The Knot.

Bank of America credit card frustrations

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Re: Bank of America credit card frustrations

  • lbonga1 said:
    It would be possible to develop a faster way to verify checks, but the banks would have to develop a formula to do so. For example, there is a formula for validating credit card numbers, which is why there's sometimes a lag time after you swipe your card. If anyone is interested, the long, complicated formula for validating a credit card is as follows:

    Take every other number starting with the second to last, and multiple each of those digits by two. Find the sum of each of the individual digits. So, for example, if after multiplying you ended up with the numbers 14, 6, 16, 8, 4, you would do: 1+4+6+1+6+8+4. Then add that sum to the sum of the digits from the card number that were not multiplied. If the final sum ends in 0, then the card number is valid.
    That is fascinating!  I had no idea.
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