Security Screening Process
The screening process at the security checkpoints in the Cayo Coco International Airport is similar to most other airports in the world.
Security checkpoint on ARRIVAL:
After exiting the Customs booth you enter the Security Checkpoint area where you and your carry-on baggage are scanned in the x-ray machine and metal detector arch to check if you are entering in Cuba any prohibited or restricted items. All checked baggages are also being scanned (in another area) and sniffed by drug-sniffing dogs. In the ADUANA CUBA website (Cuba Customs official website) you will find all information on what travelers are allowed to carry on entry.
Then proceed to the baggage carousel to collect you baggage. Keep your passeport, tourist card and baggage claim tags handy, you may have to show them when exiting the baggage area.
If you have nothing to declare then proceed to the Exit doors. The Exit Customs Officers will checked if your bags was marked (after X-ray scanning) to notify them that a bag should be checked (only if they suspect something).
Security checkpoint on DEPARTURE:
Your carry-on bag will be scanned (X-ray machine with conveyor belt) and you have to go walk through the metal detector arch, as in any other airport before boarding. In Cuban airports it's not required to remove your shoes, unless they suspect something.
Check the Aduana Cuba, section "Need previous permit", paragraph "On Export" webpage to learn more on what you are allow to export legally from Cuba as a visitor.