How does technology influence our culture?

Technology, beginning with the modern invention of the printing press (which was either first introduced by Johannes Gutenberg around 1440 or by the Korean Buddhist monks who printed the Jikji in 1377), has transformed people's lives since the Renaissance. It is possible to trace the influence of technology back further—the construction of Roman aqueducts or the great fortification wall built by the Chinese are famous examples—but they are not technologies that still impact how we live today.
Your question appears to be about contemporary technology, namely, the Internet and smart devices, such as smartphones and tablets. These technologies have impacted our culture—the world, really—in too many ways to count. What is unique is that the global impact is the same and that the impact is being felt by everyone at once, which is unusual. Even people in developing countries own smartphones that are connected to the Internet. This gives everyone an unprecedented amount of information, which is made accessible by typing on a touch pad.
We are more connected than ever before due to social media networks, which are also accessible on these handheld devices. Recent technology has brought us closer, making it possible for strangers who live in separate countries to befriend each other and share ideas. 
Internet and smartphone technology has also made it easier to do research and to access the news. However, the dissemination of information has made it difficult for some people to distinguish between legitimate and illegitimate sources. In this regard, contemporary Internet technology is similar to the printing press in that anything can be put out to the public and called valid information. People have not become more selective over time.