How to prevent duplicates in mongodb timeseries collection

Problem

Sensors check-in periodically, but network connectivity issues may cause them to check-in with the same data more than once.

MongoDB does not allow the unique property on secondary indexes for timeseries collections (MongoDB 5.0). Timeseries Limitations

In addition, calculations need to be done on the data (preferably using aggregations) that involve counting the number of entries, which will be inaccurate if there are duplicates. Not to mention it bloats the database and is just messy.

Question

Is there any way to prevent duplicate entries in a MongoDB Timeseries collection?