Unlike CAD models of commercial CAD systems in the PC environment, the models created using the current system contain only relative dimensions and do not handle constraints. Currently, this
issue can be resolved with users’ manual additions of constraints and actual dimensions after converting models for the PC environment. If the system provides a user interface for constraints and actual dimensions on a smart device, the amount of necessary further user modifications on the PC can be decreased. To realize this, the methodology for saving numeric data with B-rep information mentioned earlier should be developed for smart devices