The MOBIO database

The MOBIO database currently consists of 158 persons captured for Phase I of the database. The database has a female-male ratio or nearly 1:2 (103 males and 55 females). The data collection followed a simple recording protocol that was duplicated for all of the sessions. There were four sections within the audio-video data capture: short response questions, short response free speech, set speech and free speech.

Short Response Questions
The short response questions consisted of five pre-defined questions, which were:

• What is your name? – the user supplies their fake name
• What is your address? – the user supplies their fake address
• What is your birthdate? – the user supplies their fake birthdate
• What is your license number? – the user supplied their fake ID card number (the same for each person)
• What is your credit card number? – the user supplies their fake Card number

Short Response Free Speech
There were five random questions taken form a list of 30-40 questions. The user had to answer these questions by speaking for approximately 5 seconds of recording (sometimes more and sometimes less).

Set Speech
The users were asked to read pre-defined text out aloud. This text was designed to take longer than 10 seconds to utter and the participants were allowed to correct themselves while reading these paragraphs.
The text that was read was:

I have signed the MOBIO consent form and I understand that my biometric data is being captured for a database that might be made publicly available for research purposes.

I understand that I am solely responsible for the content of my statements and my behaviour.

I will ensure that when answering a question I do not provide any personal information in response to any question.

Free Speech
The free speech session consisted of 10 random questions from a list of approximately 30 questions. The
answers to each of these questions took approximately 10 seconds (sometimes less and sometimes more).

The answers to the random questions (Short Response Free Speech and Free Speech) DO NOT necessarily relate to the question as the sole purpose is to have the subject speaking free speech. Therefore, the answers to ALL of the random questions are assumed to be false.
Phase I of the MOBIO database consists of six sessions of data. These session will be used for evaluation in the following manner:

• Session 1 is considered to be enrollment data and is captured both on the mobile device and on a laptop.

• Session 2-6 are considered to be test data and are captured only on the mobile device