A former Robocoin ATM operator in the UK has hacked his machines to run on software from rival manufacturer Lamassu.
A dissatisfied customer's public complaints about Robocoin's product and service has revealed similar problems from other customers.
Bitcoin ATMs are a coveted sector that is rapidly becoming crowded with expanding incumbents and strong new players.
A bitcoin ATM in Bristol run by Satoshipoint has reportedly completed £38,000 in transactions during August.
Some bitcoin millionaires are turning their substantial cryptocurrency holdings to fiat, not through exchanges, but through trusted brokers.
Britain's new bitcoin ATMs are installed and will go live this Friday in London and Bristol.
London's first two-way bitcoin ATM has launched in Holborn, boosting easy access to bitcoin for the UK public.