Methods, systems, and storage media are described for processing point of sale (POS) transactions. In embodiments, a computing device may receive a transaction initiation, and provide a selection of a payment credential to be used to process a POS transaction. The computing device may include a trusted execution environment to process the POS transaction in response to the selection of the payment credential. The trusted execution environment may comprise a payment credential storage unit to store payment credentials and a virtual POS terminal that may validate a merchant terminal associated with the transaction initiation, process the POS transaction using the selected payment credential to generate payment data, and encrypt the payment data. The computing device may communicate the encrypted payment data to a cloud POS service for further processing. Other embodiments may be described and/or claimed.