Kuyankha kwamtundu wa HD wowongoka wamtundu wamoto wothirira moto ndi chopopera pang'ono chotenthetsera, mababu agalasi okhala ndi matsirizidwe osiyanasiyana komanso matenthedwe a kutentha kuti akwaniritse zofunikira zamapangidwe. Itha kugwiritsidwa ntchito kwambiri pakuwunika kapena zoopsa wamba monga malo ogulitsira, hotelo, banki, chipatala etc.