COVID-19 has been the biggest threat humanity has faced since World War II. The rapidity of its spread generated a general feeling of uncertainty and fear. National governments had to adopt measures in a context of total ignorance of the threat. The development of contact tracing applications has emerged as the fastest option to contain the spread of the virus. However, its acceptance has been reduced. This study intends to understand the reasons for the resistance in the use of those applications and to identify proposals so that in future situations the use of applications of contact tracing can be generalized. This is a qualitative study using a literature review in accordance with the procedures. The literature review allowed us to identify, on the one hand, three dimensions in the approach to the theme: technical, legal, and political. In the particular case of COVID-19, the political dimension stood out compared to the others.