Johannesburg - University of Johannesburg students were demanding on Monday that registration be done on site, and not online.
Student leader Lindokuhle Xulu told parents and students, who had been waiting to register in the scorching heat, to mobilise against online registration.
He said it was not fair that students from townships with no internet access were being forced to register online.
"We have a situation here, the university has taken a policy that is against us, saying that we are not allowed on campus. Inside campus there are more than 20 000 computers to assist you to register. We have called for officials of the university to come down and attend to our issues," he said.
Xulu said he did not understand how the university could tell a child from rural Lusikisiki to register online.
"The only resource we must use to register is inside. We must be allowed inside," he said.
Some students claimed they could not enter campus, as their student cards had been blocked. A security contingent was visible at the security gates.
Over 100 students sat outside the campus gates waiting to hear if they would be allowed to register on campus.
Xulu said the university management would address them soon.
At the nearby Wits University, registration was suspended for the day following a protest by the institution's student representative council.