While many look for hypervisor based solutions when separating multiple operating systems running on multiple cores in the new embedded devices from NXP, an easier solution is often overlooked. This session will describe ARM TrustZone as a technology currently found in the ARM Cortex A family of the devices, but being introduced by ARM in other variants. A few use cases will be presented - these include secure gateway on a Layerscape LS1021 device, and an automotive instrument cluster on an i.MX6 dual core device.