i in process of implementing sms verification process website , got thinking why sms verification codes (even send google) typically consist of numbers?
surely alpha-numerical code more secure numeric code?
the reason can think of numeric codes being prevalent perhaps latin/ascii alphabetical characters aren't readily available keyboards around world, while decimal numbers are?
- much faster type (no switching number-input text-input)
- easier remember (there ten numbers, not 26 chars)
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