System error logs in Technical Help Posted June 8, 2021 Sending a text to a phone is probably hard to implement because it will require a third party text messaging provider. As an aside, it needs to be absolutely rock solid. I once worked for a company that had need to use cellphone texting to issue control commands. It should have only been one or two messages a day, but a bug crept in, and it starting texting every couple of seconds. Worse, iy started on a weekend, and no-one noticed it until the next week, and there was a $20K bill to pay. Email is a workable option, although sometimes emails can be delayed, and make it hard to log in. I think the best option, although I have no idea how to implement it, or it's cost, would be to use an authenticator app. I have steadily added authenticators to all web services that include offer it, with the biggest omission for me, being CubeCart. There is both Google and Microsoft Authenticators, along with some third party authenticators, which have minimal log-in impact, but provides a extra layer of security, especially for applications that include financial information such as CubeCart.