https://gcn.com/articles/2017/12/19/smartphone-authentication-prnu.aspx https://gcn.com/articles/2017/12/19/smartphone-authenticatio... The application is spec

https://gcn.com/articles/2017/12/19/smartphone-authentication-prnu.aspx https://gcn.com/articles/2017/12/19/smartphone-authenticatio... The application is specific in this instance but can obviously be generalized. Thanks for the info, I'll keep this in mind.