ExternalGoods.NumericPassword.WP (nuget): Free, simple & easy to use TextBox-based component providing missing and widely-requested support for numeric password input on Windows Phone 8 and higher.  Unlike various code samples and tutorials online (this component is based on) it provides advanced editing support and thus better user experience.  See Project Site for a quick reference on using this component in your projects.
Keywords: windows-phone|wp|number|password|numeric