Meta, Strategic and Service Design SXT Partner Notification Service Web Application by Bit Zesty Ltd More than 1 million sexually transmitted infections (STIs) are acquired every day worldwide. For sexual health clinics, the challenge is getting patients who are diagnosed with STIs to notify their sexual partners. SXT, a community interest company that helps people access sexual health services, engaged with Bit Zesty to find a digital solution. We created a service that enables patients to notify their partners anonymously and helps patients to find a local clinic for testing. So far, 14 clinics have adopted the service, notifying 5,400 partners.