Packt Publishing

Raspberry Pi for Secret Agents

In DetailEver wished you could play around with all the neat gadgets your favorite spies use (like James Bond or Michael Westen)? With the introduction of the remarkable Raspberry Pi and a few USB accessories, anybody can now join in on the action.
Discover how to turn your Raspberry Pi into a multipurpose secret agent tool! Through a series of fun, easy-to-follow projects you'll learn how to set up audio/video surveillance, explore your Wi-Fi network, play pranks on your friends, and even learn how to free your Raspberry Pi from the constraints of the wall socket.
Raspberry Pi for Secret Agents starts out with the initial setup of your Raspberry Pi, guides you through a number of pranks and secret agent techniques, and then shows you how to apply what you've learned out in the real world.
Learn how to configure your operating system for maximum mischief and start exploring the audio, video, and Wi-Fi projects. Learn how to record, listen, or talk to people from a distance and how to distort your voice. You can even plug in your webcam and set up a motion detector with an alarm, or find out what the other computers on your Wi-Fi network are up to. Once you've mastered the techniques, combine them with a battery pack and GPS for the ultimate off-road spy kit.
ApproachA playful, informal approach to using the Raspberry Pi for mischief!
Who this book is forRaspberry Pi for Secret Agents is for all mischievous Raspberry Pi owners who'd like to see their computer transform into a neat spy gadget to be used in a series of practical pranks and projects. No previous skills are required to follow along and if you're completely new to Linux, you'll pick up much of the basics for free.
Apart from the Raspberry Pi board itself, a USB microphone and/or a webcam is required for most of the audio/video topics and a Wi-Fi dongle is recommended for the networking examples. A Windows/Mac OS X/Linux computer (or second Raspberry Pi) is also recommended for remote network access.
200 printed pages
Publication year
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    Ingridhas quoted2 years ago
    Let's break down exactly what's happening here. The sox command accepts an input file and an output file, in that order, together with a myriad of optional parameters. In this case, -t alsa plughw:1 is the input file and -d is the output file. -t alsa plughw:1 means ALSA card number one and -d means default ALSA card, which is the Raspberry Pi sound core. The status line that is continuously updated while sox is running provides many helpful pieces of information, starting from the left-hand side
    Ingridhas quoted2 years ago
    Type in the following command to install SoX and an add-on for dealing with MP3 files:
    pi@raspberrypi ~ $ sudo apt-get install sox libsox-fmt-mp3
    Now type in the following command to start what we call a monitoring loop:
    pi@raspberrypi ~ $ sox -t alsa plughw:1 -d
    Ingridhas quoted2 years ago
    We can check if ALSA has detected our new audio device and added it to the list of cards using the following command:
    pi@raspberrypi ~ $ cat /proc/asound/cards

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