ProgrammableWeb editor-in-chief David Berlind interviews Telesign director of product management Vince Oh. While you may not have heard of Telesign, you have no doubt encountered its APIs as a customer of some enterprise that uses them to not only authenticate the legitimacy of new registrants, but also to drive improved customer engagement. One reason Telesign is able to do this is because of the information that's available to it as a subsidiary of BICS; one of the world's largest providers of global roaming solutions. In the course of providing those solutions, BICS is able to collect the sort of data (and route it to Telesign) that other SMS API providers (and cPaaSes) cannot easily access.