It wasn't my intent to imply this didn't involve money. You can have central planning and still have money, no? I would not disagree that it's nigh impossible to have a functional economy without money...
You could still have money but needing money to live a normal life or being able to use money to invest or stockpile goods would represent a failure of central planning.
Limiting the scope of markets limits the utility-signalling function of money, even if it is retained (as, in practice, centrally-planned systems tend to.)
This is a problem of input data that technology that provides alternative mechanisms to collect the same data (cell phone purchasing) does not address.