Signal Light
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Description
Note: Your device must have a flash to use this app!
Camper, Sailor, Soldier, Spy
A handy tool for campers, scouts, boaters, (and yes, spies)!
Use it to communicate with distant friends using Morse code, tap out a beat for a human-powered strobe light, or get the attention of rescuers.
This app is based on the old mechanical “signal lamp” which is a manually-controled shuttered spotlight used on warships to communicate securely while maintaining radio silence.
Modern navies still use signal lamps, but now use infrared wavelengths and night vision goggles!
Extra fun:
Put a paper towel tube on the flash to make a tight spotlight and you’ve got a line-of-sight communication tool that only you and your partner can see.
p.s. SOS is . . . – – – . . .
Hide..
Show more..
Camper, Sailor, Soldier, Spy
A handy tool for campers, scouts, boaters, (and yes, spies)!
Use it to communicate with distant friends using Morse code, tap out a beat for a human-powered strobe light, or get the attention of rescuers.
This app is based on the old mechanical “signal lamp” which is a manually-controled shuttered spotlight used on warships to communicate securely while maintaining radio silence.
Modern navies still use signal lamps, but now use infrared wavelengths and night vision goggles!
Extra fun:
Put a paper towel tube on the flash to make a tight spotlight and you’ve got a line-of-sight communication tool that only you and your partner can see.
p.s. SOS is . . . – – – . . .
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App Info
- Category
- Utilities
- Publisher
- Bryan Wu
- Languages
- English
- Recent version
- 1.0.4 (1 year ago )
- Released on
- Nov 14, 2015 (8 years ago )
- Also available in
- United States, Canada, Portugal, Israel, Italy, Kuwait, Kazakhstan, Lebanon, Malaysia, Norway, New Zealand, Peru, Philippines, Poland, Australia, Russia, Singapore, Thailand, Turkey, Taiwan, Ukraine, Vietnam, South Africa, Ecuador, United Arab Emirates, Azerbaijan, Belgium, Chile, China, Colombia, Czechia, Germany, Dominican Republic, Ireland, Egypt, Spain, Finland, France, United Kingdom, Greece, Hong Kong, Hungary, Pakistan, Algeria, Netherlands, Nigeria, Belarus, India
- Last updated
- 1 week ago