Most late model honda motorcycles have an electronic key . When you buy a repairable write off they seldom come with keys .If you buy a honda without a key it you will need to replace the inbuilt security system which includes the full wiring harness , these start at a cost of around $2500 and up [big ouch] .There is no way around this . I know this because it happened to a friend , the bike is still sitting in his shed 5 months later . If you are considering buying a honda  repairable write off AWAYS verify if it has a key before you part with your hard earned money. Your local honda dealer will confirm all