awk, Wave built a version of the ETS applications for Acer which use the software security functions of Windows(MS Crypto API) to provide the same functions as the TPM, except that it is all software with no hardware. Not as secure, but with the same functions as with a TPM. They must have wanted to have Wave's security applications across all their platforms, but not all the platforms had a TPM in them. This also means Acer didn't need another vendor to manage the software security.