OPOLO Cosmos never keeps the sensitive data in the MCU, it automatically removes it after usage. Furthermore, OPOLO does not use SRAM for sensitive data. As SRAM is connected to USB so we never put sensitive data in the SRAM of MCU.
Although the sensitive data should have been removed after use from the MCU, however, we give this option so the user can manually erase all the sensitive data (if any) from the MCU and shut down the device.