Does IB accept physical stock certificates?

Background: 

IB does not accept or hold any physical stock certificates. As a matter of operational efficiency and costs, we hold all securities in street name meaning that they are registered electronically in the name of IB on the books of the issuer. IB, in turn, holds securities for clients in what is known in the industry as 'book entry' form which simply means that we maintain a record on our books that you are the beneficial owner of the securities.