Consider Using Localized Input Masks for 'Phone' and Other Restricted Inputs (64% Aren't Taking Advantage of Input Masking) – Articles – Baymard Institute
Format Mask in Forms – Slate Knowledge Base
Create Input Masks in Access - Instructions - TeachUcomp, Inc.
Working with Input Masks
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Implementing react-input-mask for web apps - LogRocket Blog
How to Use Input Mask in Your Contact Form (Examples) - Ninja Forms
Mask & Format User Input In Text Fields - jQuery Samask | Free jQuery Plugins