A pinhole is a small hole in the surface or interior of a material. Pinhole can also mean:

• Pinhole (band), a rock band from Liverpool, England, later to become The Dead 60s
• Pinhole camera, a camera that uses a pinhole to form an image instead of a lens
• Firewall pinhole, in computer networking, describes a port that is opened through a firewall to allow a particular application to gain controlled access to the protected network

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