Migration flows along the Bolivia-Chile border presented changing patterns in terms of movement schedules, entry points, and diverse control measures enforced by Chilean authorities. This complexity delayed the ability to conduct comprehensive and effective data collection exercises using IOM¨s Displacement Tracking Matrix (DTM). This is why IOM Chile and Bolivia started to work together to address this challenge. To optimize resource utilization and respond effectively to the dynamics at the Chilean-Bolivian (Colchane-Pisiga) border while fulfilling the information generation requirement, a strategy was developed for a comprehensive DTM coverage, particularly targeting areas with high mobility. Initially, surveys were solely conducted among individuals at the reception center on the Chilean side, missing information of a significant portion of the population migrating or in transit. The strategy was designed to involve personnel from both sides of the border. This way, the DTM teams from IOM Bolivia and IOM Chile began a joint border analysis work since May 2022. During the initial count at formal terminals, over 400 individuals were counted. Subsequently, this type of counting was conducted monthly, and later, on a weekly basis. The collected information led to the development of a dynamic, publicly accessible dashboard, enabling the visualization of the data cycle, updated with each weekly count. Link to dashboard: https://app.powerbi.com/view?r=eyJrIjoiNmQ0NDVmNTItNTc4OS00NTYzLTg0YzMt… Since June 2023, characterizations began to be included in the count once a month using a concise questionnaire. Simultaneously, additional survey points were identified. Characterization reports are generated every two months. Considering that there are several borders with a high flow of people and complex geography, this methodology is easily replicable in those similar circumstances.

When carrying out the DTM Flow Monitoring Registry, information is obtained by observing and asking about nationality. However, no personal or contact data is collected. No personal data such as names and contact details are collected. When giving informed consent, it is explained that the information is completely anonymous and voluntary.  

Additionally, there are questions about the person's sex but there are no questions related to their gender. This was determined by the dynamics of the border survey, most of the surveys are given in open spaces, so it is sought to reduce questions that may put the person at risk. However, in the reports the results where the crossing data by sex shows significant differences is highlighted. The person responding the survey is also asked general questions about the children under their care, this is to get a basic profile of the children (age, sex, documentation they have and education access in the last year).  At this point, the tool is being improved based on the experience of the surveyors. In addition, two Venezuelan surveyors are part of the team, which has allowed for a better perspective on the questions and their phrasing.