An input that is getting masked (really, re-evaluated) as currency.
Stride's own Ian McNally has open sourced a currency masker for React.
It takes a normal number input, and converts the last two digits into cents.
Using the mask makes number inputting faster, since a user only has to input digits, not dots too. It works great on mobile, with pattern="d*", which launches the numeric keypad. Bigger numbers means less typing errors.
I just added it into Farely. The speed and accuracy on a numeric keypad will keep the impatient and the creeps at bay when you're trying to refill your metrocard.