Sell devices using Thinger Platform

Hello,

I am in
Portugal and I found your IoT website.

I have tested one device connected and one dashboard.Works nice.

How can I use Thinger platform to sell more devices and allows independent users to connect them
to the platform without having an account?

Example:

One customer
buy to us a device ( temperature sensor) and connects to the personal LAN that
is connected to the internet.

How can he see the temperature log on his dashboard without having an account with Thinger but
a service that we can provide to him.

best regards

Luis