http://h2zkj5xeycxb2esnyqeabuuo6ui6jlkdb72qjfi2hu3y3h5ilpmjphid.onion/wiki/Visas/index.html
According to government statistics, the most common reason for visa refusal (65% of cases) is "Doubts over intention to return to home country/insufficient
economic or family ties in home country". Even if you are receiving full financial support for the trip from DebConf sponsorship, it is important that you demonstrate to the immigration officials that you will return home afterwards, for example giving evidence that you have a job to return to, or that...