In the UK, you have to be 18+ to buy knives. Does anyone know of a good way to verify age for an ecommerce site? And don't say credit cards, as there are many "prepaid" credit cards and debit cards available to under 18s.
Looking online the majority of your competitors simply have a checkbox to state that you are 18 or over (though some actually say 16 or over). Your statement on cards is a little off though..... debit cards are different to credit cards and you can test if a card is debit or credit. Every prepaid card I have seen is the same as a credit card in that the cardholder has to be 18 or over but that of cause doesnt stop either kids using their parents card or the cardholder having secondary cardholders that can be any age basically. Likewise the law doesnt prevent under 18s from having credit cards its just their not liable for the debt and so banks dont tend to issue them as its a bit of a loser for them.