What is a HSM and how does it work for PTX? Cloud Payments Expert March 21, 2019 11:44 Updated Follow If you are interested in using a HSM with PTX, please see the related article: HSM Requirements HSMinfoPDF.pdf 300 KB Download Related articles What are the HSM requirements for PTX? What are the onboarding requirements for PT-X? How to submit to Bacs - Direct smartcard and CSM and Indirect What is Faster Payments? What is Bacs?