have got something taped
have (one) taped
To understand or know someone or something well and use that knowledge accordingly. Primarily heard in UK, Australia. I had you taped the minute you walked in here scowling. You're going to sit right here, in the front of the classroom.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
have got something tapedBRITISH, INFORMAL
If you have got something taped, you understand it and are in control of it. The one certainty of parenthood is that whenever you feel you've got it taped, something or someone will come along to throw you off balance! They rarely enter any competition until they have got it pretty much taped.
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012