Hazrat Mahdi’s (as) followers will have the power to traverse the entire earth within moments. (Mikyaal al-Makaarem, vol:1, p. 144)
The hadith refers to the technology of the End Times that Hazrat Mahdi’s (as) followers will make use of. His followers will make use of the Internet and satellite imaging systems and will thus be able to immediately see anywhere in the world they want. Hazrat Mahdi’s (as) followers will be modern ones who make full use of technology and science.
Nothing on earth will be hidden to the followers of Hazrat Mahdi (as). (Mikyaal al-Makaarem, vol:1, pp. 235-236)
The hadith refers to the followers of Hazrat Mahdi (as) having easy access to any information they need. That may be by means of today’s Internet. Our Prophet (saas) indicated 1400 years ago that it would be easier and faster to communicate and obtain knowledge, and that Hazrat Mahdi’s (as) followers will make use of that technology.