There are several limitations to this study. First, the
sample size is small, limiting the ability to generalize the
findings. Second, the participants are not representative of
the general population. They tended to be young adults,
white, female, college-educated, and mobile phone users.
Thus, the findings are not conclusive, and will require
validation from a larger study with a more representative
population. While a change in weight during the monthlong feasibility study was recorded, there was no appreciable different among the groups.