If you think that you may have a sexually transmitted disease (“STD”, which used to be known as “VD”, or venereal disease or – as it’s known in the UK – sexually transmitted infection or “STI”), such as syphilis, herpes, chlamydia or gonorrhea, or even HIV, and want to get yourself tested without having to leave your house, well, now there’s an app for that. Or, there will be, once the eSTI project goes from prototype to drug store.