Reminder: change in T-CAT cards (JCOP4)

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We remind you of the change in T-CAT cards (from JCOP 3 to JCOP4) that's it communicate in March, and which is part of the actions planned to guarantee the correct functioning of the service and its adaptation to the new technical requirements.

Date of change:
The change will be made on July 15 2026 and will not involve any service outage, simply the current JCOP 3 will no longer be accepted to generate certificates.

Impact on end users

For users the change will be completely transparent:

  • No new software will need to be installed.
  • JCOP3 cards will remain valid until their expiration date.
  • The signing, authentication and access processes will remain the same.
  • From July 16th, any certificate requested will be generated with the new support. JCOP 4 without this leading to any change in the user experience.

Impact for T-CAT Registration Entities

For registration entities yes, there will be a necessary action:

  • It will be necessary replace the current stock of JCOP 3 cards for the new ones JCOP 4, for this reason we will be contacting each of you.
  • From the indicated date, the old media will no longer work for issuing certificates and you will be advised that you must use the new model. The issuance, registration and activation procedures will not change.

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