Hello all,

We are on odoo 8. 

Our website shop works very well. But at the checkout (see image below), the user can buy WITHOUT to create an account on our site. He fills the form on the checkout and can continue and pay by Paypal.

If a user comes many times to buy on our site without to create an account, a new contact (res.partner) is created each time he comes. This is a problem because after many purchases from the same customer, we have to merge the different created partners. It is not funny... You understand the problem?

So how should we proceed to force customers to register with an account on the site? Which approach should we use? It should be impossible for customer to buy without to register before.

Image :

EDIT #1

We already found this : https://www.odoo.com/fr_FR/forum/aide-1/question/force-user-to-register-checkout-102184