Online payment is made to the MPDI foundation
well known PayPal money transfer system
( owned by eBay ).
All communications are secure and encrypted, and no credit card information
is stored on our site, and is available to us in anyway.
The PayPal service is a very convenient tool for a non-profit entity
like MDPI, since the setup is inexpensive and secure.
You may pay
directly with a credit card, if you do not have
already a PayPal account.