easy and secure Messages

Dear Nils,

often, i have a customer, and the customer just want to tell me a password, but it is only once, and i dont want to give a TeamPass-Login, just for this case.

Then, he's doing that on SMS, Email, telephone, or whatever.

would that feature be a idea?:

In The app, there could be a page, secured just by captcha (no login required), and a message-field, where the user can post. Then its transmitted secure (https). When i log in TeamPass, i can see the new posts?
.. and nice-to-have: In case, a Notification could be desplayed on my screen

Thanks,
Christian