
These condoms employ advanced nanotechnology to detect STIs during intercourse, changing texture and color depending on the presence of specific pathogens. The subtle yet distinct alterations serve as a discreet warning system for users, allowing for swift intervention. Upon application, these condoms undergo phase transitions, altering their surface tension to deter transmission risks when STI particles are present. Users must still practice safe sex habits, but these enhanced barriers offer supplementary protection against unseen threats.