Ingress (noun)

The act or process of entering or the right or permission to enter a place.

Origin:

Late 16th century, from latin ingressus "entrance, approach", from the verb ingredi, from in- "into" + gradi "to step".

Examples:

1. The museum had strict rules regarding ingress and egress of visitors.
2. The ingress was blocked by a fallen tree and they had to find another way into the park.
3. Ingress into the concert was only allowed for those with a ticket.
4. The new security measures were implemented to control ingress into the building.
5. Ingress and egress of ships was tightly controlled in the harbor for security reasons.