The Mobile Intervention Kit (MIK) is designed to facilitate overdose prevention and response training, and to increase HIV and HCV testing among opioid users in clinical and community settings. Video content was developed in collaboration with former opioid users. During a recent trial, we presented the MIK with an automated HIV/HCV risk screening separately assessing substance use and sexual risk. Participants at a Bronx NY street outreach site (n=31) completed separate modules on overdose, HCV, and HIV. All ten participants in the HCV module accepted HCV tests after watching the video. Two HCV tests were reactive. Ten out of 11 participants in the HIV module (91%) accepted an HIV test after watching the video. One HIV test was reactive. Six out of 10 participants in the overdose prevention module (60%) agreed to receive additional training in naloxone after watching the video. The MIK is intended as a self-contained tablet-based intervention.