Short distance data transmission method by using QR code

QR code (quick response code) has become a widely common technology along with the increase in the usage of smartphone. In many areas, QR codes have over taken the place of linear barcodes due to the obvious advantages of large data capacity and ease of data retrieval. In this paper, we propose a novel data transfer scheme that employs the camera in smartphone devices as an alternative data channel. The sender device encodes data as a series of QR code images like the video data type. The video will be exhibited on the screen of smartphones, tablets, or PCs. The receiver device records the video by camera, splits video into frames, and decodes the data from images. This method is implemented by using multiple versions of QR code started from 1 to 40. By conducting several experiments, the version 19 is the best choice for transferring data between smartphone devices because of it’s the ability to transfer 135 Kbit/s without error. To transmit data from tablets and PCs to smartphone devices, the best version of QR code is 29, which allows 277 Kbit/s to be transferred without error. Further, the proposed method shows the advantages of permitting satellite TV channels to transfer files to viewers instead of giving file links. This results in solving the problem of transferring files from IOS and Mac devices to windows and android devices and vice versa.