How to use:
(1) Just enter you and your crush's phone number. (For security, just tail 7 numbers)
(2) You will be matched if and only if your crush locks your phone number too.
The benefits are:
(1) Never feel shy to express your love.
That is, nobody can know whom you love.
(2) Never be rejected by your crush.
That is, if your crush doesn't love you (not lock you), she never knows you lock her.
(if it helps you, remember to give it a good comment)