Voice verification explained
Subject attendance monitoring
Voice verification provides a flexible and efficient way of monitoring the day-to-day compliance of community-based subjects. Telephone voice verification systems can play a key role in monitoring the conditions of a bail notice, community sentence or licence. An efficient community-based compliance monitoring option, voice verification provides a means of checking by telephone that a subject is keeping to his or her conditions of sentence, licence or other programme. These conditions could include:- Checking that subjects are at home or at another specified place at a given time
- Checking that subjects are keeping to their treatment programme
- Monitoring subject attendance at school or work or keeping to appointments at a careers centre or drug counseling session
- Checking that subjects are attending community service. G4S’s voice verification system is capable of monitoring subjects with random, prescheduled and on-demand outbound verification calls and scheduled inbound verification calls over digital or analogue telephones.
At the start of a programme, we visit subjects to set up the system and explain how the voice verification process works. An initial voice recording is taken from the subject, which is used as a blueprint for all future communication by telephone. Our technology enables us to check the unique voice of the subject against our recorded and stored version each and every time the subject calls through. If the subject’s voice on a call does not match the recorded blueprint, or if the subject is not calling from the location he or she should be at, then we refer this information to the Supervising Officer. Where needed, we can fit a new line to monitor a subject at home for the duration of his or her programme.
Key benefits
- Minimises the risk of attempted breaches of detention terms
- A continuous presence which provides “real time” verification and timely notification of any time zone infringements
- Cost-effective and secure way of monitoring subject activities in their day-to-day environment
- Easy to use and intuitive system for subjects
- Offers complete flexibility to arrange scheduled and on-demand inbound and outbound calls to set locations at set times
- Schedules and alerts can easily be set up and adapted for subjects requiring increased levels of monitoring
- No hardware or software is involved – the system simply uses normal telephone lines
- Subject voiceprint enrolment for the system is straightforward and instant.
Voice verification technology is an example of a biometric technology based upon the identification of distinctive characteristics derived from spoken phrases. These characteristics are based on the physiology of the vocal tract combined with unique behavioral aspects of speaking to enable verification of the identity of the person who is speaking.
Accuracy is key to compliance monitoring and for this reason the technology we use provides extremely accurate voice verifications. The system is designed to efficiently operate over different telephony networks, supporting real life conditions, multiple dialects, accent variations and languages including background noise and natural voice changes.
Increasing control and flexibility for managing subjects in the community, voice verification systems provide a simple means for passive, on-demand, monitoring of subjects in their homes or other pre-set locations.
There are two key ways of checking whether a subject is keeping to his or her conditions. Voice verification calls can be made randomly between certain pre-agreed times, or subjects can be asked to call our national voice verification line at a fixed time.
