For ports, airports, stations, tunnels, sites dedicated to transporting people but also goods and energy, the constraints are varied:
An increased interoperability, due to the wide variety of services and actors involved in thesecurity of infrastructures: by implementing gateways with Police databases, specific features and developments on the readers to allow access safe for firefighters …
Business continuity that must be ensured on vital transport infrastructure for urban areas, therefore with full redundancy devices to be put in place
Physical constraints: in particular with large sites requiring geographic division and partitioning of operations by territory
The need to comply with national and international regulations and codes: such as International Ship and Port Security (ISPS), in particular.