He has named the Android app "Grace", and at the mention of its name and instructions it can switch on or off electrical devices without physical contact.

Kamwana has told Zodiak Online that he conceived the idea to help people with various disabilities to operate electrical appliances at the command of their voice.

In a demonstration video, Kamwana is seen switching on a bulb, turning on an electric kettle and a hotplate using his voice command to the Grace app.

Asked why using an English name to identify his software, he says it is because most software programmes that Grace interacts with are in English.

He, however, says the name is well known even to less educated people.

The young man who comes from the area of Chief Wimbe in Kasungu came into the limelight after developing an automatic water dispenser and a vacuum cleaner called Anaphiri, to mention but a few of his inventions.

Kamwana has asked people of good will to support his innovations, saying as a first-year student, he needs a laptop computer for programming.

"I used a borrowed computer and now the owner has taken it,” "he said when asked about the future of his scientific world.

Kamwana is an orphan and survives on selling baked scones during holidays.