No
an apparatus, system, or process for transmitting messages or signals to a distant place, especially by means of an electric device consisting essentially of a sending instrument and a distant receiving instrument connected by a conducting wire or other communications channel
A walkie talkie is a simple transceiver. It is capable of transmitting and receiving radio signals on a single device.
Firstly gameshark is cheating device for gameboy. secondly a code is a system of signals used to hack the game card itself causing it to corrupt the transmitting messages to the game data. Ummm ... Here's a good link: http://www.gamefaqs.com/gba/918915-pokemon-firered-version/faqs/28392
The most popular such device is the computer - the very device with which you asked that question, and with which I am answering it.
telegraph
microchip
modem is the device that carries digital signals
An Electronic Device
Yes, a telegraph is a device for sending messages. It sends telegrams.
a communication device
Illegal activity includes holding a portable electronic device and:Talking on a handheld mobile telephoneComposing, sending, reading, accessing, browsing, transmitting, saving, or retrieving electronic data such as e-mail, text messages, or webpagesViewing, taking, or transmitting imagesPlaying games
a communication device