peeker
Keyhole eye user
A peeker is someone or something that peeks—looks quickly or furtively, often through a small opening or from a concealed position: The little peeker was watching us through the fence.
In computing, a peeker is a tool or function that examines memory contents or data without modifying them.
One who spies privately
- snoopOne who pries
- eavesdropperOne who listens secretly
- prowlerOne who lurks suspiciously
- lurkerSilent forum presence
stalker · creep · trespasser · intruder · keyhole · furtive · stealthy · prying
One who observes
- observerOne who perceives events
- spectatorObserver at an event
- onlookerPerson who observes
- bystanderOne who observes nearby
viewer · witness · gawker · rubbernecker · beholder · looker · glancer · eyewitness
Camera's composition window
- peepholeDoor-mounted viewing lens
- spyholeDoor's viewing aperture
- lensLight-focusing curved glass
- apertureAdjustable optical inlet
telescope · binoculars · microscope · scope · camera · slot · crack · gap
Image capturing device
- monitorDisplay or supervisor
- CCTVSurveillance camera network
- securityProtection from threat
- watchguardOne who keeps watch
sentry · scout · patrol · lookout · radar · scanner · detection · perimeter
One who acts independently
- infiltratorOne who enters covertly
- moleSubterranean insectivore
- informantOne who provides intelligence
- undercoverSecretly engaged in espionage
espionage · reconnaissance · intelligence · surveillance · covert · clandestine · wiretap · intercept
voyeur
One who spies privately
- snoopOne who pries
- eavesdropperOne who listens secretly
- prowlerOne who lurks suspiciously
lurker · stalker · creep · trespasser · intruder · keyhole · furtive · stealthy · prying · nosy
watcher
One who observes
bystander · viewer · witness · gawker · rubbernecker · beholder · looker · glancer · eyewitness · perceiver
viewfinder
Camera's composition window
aperture · telescope · binoculars · microscope · scope · camera · slot · crack · gap · slit
camera
Image capturing device
watchguard · sentry · scout · patrol · lookout · radar · scanner · detection · perimeter · vigilance
agent
One who acts independently
- infiltratorOne who enters covertly
- moleSubterranean insectivore
- informantOne who provides intelligence
undercover · espionage · reconnaissance · intelligence · surveillance · covert · clandestine · wiretap · intercept · counterintelligence
- sneak peekAdvance partial viewing
- have a peek
- peeking through
- screen peekingViewing opponent's display unfairly
- sneak a peek