If the EMB uses technology to collect voter registration data, is biometric data captured and used during registration?

According to Biometric Planet, The Mauritanian Ministry of the Interior and Decentralization contracted them to provide a biometrics  system as part of its project to revamp the production of the country's secure national identification documents. In a release Morpho (Safran group) said it has signed a contract with the Government to guarantee the secure issuance of ID documents for both citizens and residents, including multi-application ID cards, polycarbonate data page passports, residence cards and driver licenses. For this, Morpho will use the latest version of its well-known multi-biometric recognition system, combining fingerprint and facial recognition technologies.

The operation began on November 28^th 2010. The Mauritanians were issued with a biometric card, which was used for voter registration. http://www.planetbiometrics.com/article-details/i/248/