Method, device and computer program for transmitting and obtaining network credentials
Arrangements for transmitting network credentials from a user device to a second device to enable the second device to connect to a network are disclosed. At the user device, a user inputs network credentials for the second device to enable the second device to connect to a network. The user device transmits modulated light to the second device. The light is modulated so that the transmitted light is encoded with the network credentials. The second device has a photo sensor for receiving the modulated light from the user device and a processor for processing the modulated light to obtain the network credentials from the received modulated light.
1. A method of transmitting network credentials from a user device to a second device to enable the second device to connect to a network, the method comprising:
at the user device, receiving from a user input of network credentials for the second device to enable the second device to connect to the network; and
transmitting modulated light from the user device to the second device, the light being modulated so that the transmitted light is encoded with the network credentials, the second device having a photo sensor for receiving the modulated light from the user device and a processor for processing the modulated light to obtain the network credentials from the received modulated light.
2. The method according to claim 1 , wherein the modulation for modulating the light is frequency shift keying.
3. The method according to claim 1 , wherein the modulation for modulating the light is amplitude shift keying.
4. The method according to claim 1 , further comprising, converting, at the user device, the input network credentials to American Standard Code for Information Interchange (ASCII) or Unicode Transformation Format (UTF), the light being modulated with the ASCII or UTF format network credentials so that the modulated light that is transmitted is transmitted as a binary bit stream of the network credentials.
5. The method according to claim 1 , further comprising: receiving, at a keyboard of the user device, the input of the network credentials by the user typing on the keyboard.
6. The method according to claim 1 , further comprising: receiving, at a microphone of the user device, an audio input of the network credentials from the user.
7. A user device for transmitting network credentials to a second device to enable the second device to connect to a network, the user device comprising:
an input arrangement for enabling a user to input the network credentials for the second device to enable the second device to connect to the network;
a light source; and
a modulator for modulating light, emitted from the light source, with the network credentials;
whereby the user can input the network credentials to the user device and the user device can transmit modulated light to the second device to transmit the network credentials to the second device.
8. The user device according to claim 7 , wherein the modulator is arranged to modulate the light using frequency shift keying.
9. The user device according to claim 7 , wherein the modulator is arranged to modulate the light using amplitude shift keying.
10. The user device according to claim 7 , wherein the user device is constructed and arranged to convert the input network credentials to American Standard Code for Information Interchange (ASCII) or Unicode Transformation Format (UTF), the modulator being arranged to modulate the light with the ASCII or UTF format network credentials so that the modulated light that is transmitted is transmitted as a binary bit stream of the network credentials.
11. The user device according to claim 7 , comprising a keyboard for receiving the input of the network credentials by the user typing on the keyboard.
12. The user device according to claim 7 , comprising a microphone for receiving an audio input of the network credentials from the user.
13. A non-transitory computer-readable memory device storing a computer program for a user device, the computer program comprising instructions such that when the computer program is executed on the user device, the user device is configured to:
receive from a user input of network credentials for a second device to enable the second device to connect to a network; and
transmit modulated light from the user device to the second device, the light being modulated so that the transmitted light is encoded with the network credentials, the second device having a photo sensor for receiving the modulated light from the user device and a processor for processing the modulated light to obtain the network credentials from the received modulated light.