In QField it is possible to save positioning information in point features through expression variables like @position_horizontal_accuracy or @position_number_of_used_satellites. The explanation is given in the official QField documentation (https://qfield.org/docs/en/prepare/attributes-form.html).
For a comprehensive data accuracy assessment I want to save the abovementioned variables and maybe additional variables (e.g. @position_vertical_accuracy) for each vertex of line and polygon features. In 2017 Matthias Kuhn mentioned the possibility to theoretically do so by saving the information to the m-value of vertices but that it was not yet implemented (https://github.com/opengisch/QField/issues/179).
Is it possible to somehow store multiple GNSS position information for each vertex of a line/polygon feature? How?
If not, is it at least possible to only store horizontal accuracy as a single value in the m-value of vertices?
If not directly possible, are there any workarounds?