Lumio works closely with financial account providers included in Open Banking, an initiative that connects Lumio to the UK’s account providers using secure connections called "Application Programme Interfaces" or "APIs".
It's a bit like when you sign in to another app via Facebook or Google, it doesn't change or allow unlimited access to your actual account, and you can stop access at any time from your banking app. You'll get prompted every 3 months to reconnect, so you can never accidentally leave the connection running.
It’s also worth mentioning that Lumio is registered as a Payment Services Directive Agent of Moneyhub Financial Technology Ltd, which is authorised and regulated by the Financial Conduct Authority. Find out more on the FCA Register [insrt link: https://register.fca.org.uk/ShPo_FirmDetailsPage?id=0010X00004Vt4mjQAB].