The idea of ​​auto-change layouts when entering email

Owners of mobile phones and smartphones have certainly not once encountered such inconvenience as entering an email in a Russian-language message: when typing an email address, you either have to switch to the Latin layout and then back or click the Cyrillic alphabet when typing each letter. It seems to be a trifle, but terribly annoying. So I came up with the following, in my opinion, quite reasonable and quite simple solution to this problem, which would be nice to adopt for manufacturers:

As you know, each email address contains an “@” symbol, which is rarely used for other purposes. So why should the system not do the following: as soon as the user enters the "dog", the cursor automatically takes its place in front of the symbol, and the layout automatically changes to Latin. After entering a space (there are no spaces in email addresses, so a space can signify completion of input) the layout changes back to Cyrillic. If the “@” symbol was supposed to be used for other purposes, after its input it is only necessary to move the cursor back to the right, to which the system responds by reverse changing the layout. It's simple.

I think such a simple system can be implemented not only in mobile phones.
')
Patents are pending :)

PS: I’m talking about auto-change layouts not in separate fields (Nokia has been able to do this for a long time), but in arbitrary texts (SMS, ICQ, notes, etc.).

UPD: the first interested legal entities appeared :)