EAE

If you have already had scans taken under the EES, your fingerprints and facial image are stored, so border officials will only need to verify your data, making crossings faster. If you have a biometric passport, you may be able to use self-service systems to speed up the process even further. 

If you have already had scans taken

• Your biometric data (facial image and fingerprints) is already in the EES database.
• Border officers will use this stored data to verify your identity.
• This process is faster than providing new data each time.
• You will typically not have your passport stamped. 

If you have a biometric passport

• You may be able to use automated self-service kiosks, if they are available at the border crossing.
• This can make your border crossing quicker and more comfortable. 

In summary

The EES is designed to make border crossings more efficient for those who have already been processed. Your first EES scan creates a digital file that is used for all subsequent crossings, which are faster as long as your data is clear and there are no issues.

Well, that's the theory. It will be nice to see if it works in practice. 

• First entry: On your first entry into the Schengen area after the system is fully operational, you will need to register your biometric data (facial image and fingerprints).
• Subsequent entries: For all subsequent entries within three years, the process will be a quick verification, as your biometric record already exists.
• When you'll need to re-register: You will need to provide your biometric data again if you haven't entered the Schengen area for three years or if you are traveling with a new passport. 

Be aware that this trip counts in your 90/180 days as Czechia is in Schengen area and the fact that you had photos and fingerprints taken mean that you have non-EU (3rd country )passport and are limited to same