Normally, el trading mirror / copy is a service offered when someone or a company wants to copy an operator / manager who has a proven track record, whether buying and selling currencies, commodities, equities or cryptocurrencies. This type of trading it is also often used when the trader / manager uses leverage, which is often the case when managing cash and commodities. 

The FCA,in the UK, it offers the following guidelines between the trading in mirror and the trading of copy like: "El mirror trading, an evolution of automated trading, simply implements fixed strategies based on investment preferences. Mirror trading can involve copying experienced and successful traders. Copy trading usually involves setting a fund ratio to execute the copied investor's trades from the allocated funds. Platforms vary in minimum copy trading amounts and ratios between copied and copy accounts".