Isis, the near field communication mobile wallet venture from Verizon, AT&T and T-Mobile, took another step forward with the announcement that it has selected SIM card maker and digital security specialist Gemalto as its trusted service manager (TSM) for the wallet.

Isis, the near field communication mobile wallet venture from Verizon, AT&T and T-Mobile, took another step forward with the announcement that it has selected SIM card maker and digital security specialist Gemalto as its trusted service manager(TSM) for the wallet. The deal means Gemalto will manage the secure element on Isis phones, overseeing the transfer of payment credentials from banks and payment services to the Isis wallet application on phones.

Gemalto will essentially hold the payment keys for Isis, controlling which service providers are able to tap Isis for contactless payments.