The Conservative leadership frontrunner Boris Johnson has again insisted the Irish border issue can be dealt with by "technical fixes" - but admitted there's "no single magic bullet" to address the issue.
Mr Johnson, who's vying with Jeremy Hunt to become the next British prime minister, was speaking during an interview with the BBC.
The foreign British foreign secretary claimed that border issues need to be dealt with after the UK leaves the EU, during a so-called implementation period.
Under the proposed withdrawal deal agreed by Theresa May with the EU, there would be a transition period of around two years - allowing old rules to be phased out while the new ones come into force.
However, Mr Johnson claims that deal is "dead".
When questioned over how there'd be an implementation period if the UK rejects the existing withdrawal agreement, Mr Johnson said he's aiming for 'some kind' of agreement.
Experts have repeatedly ruled out the prospect of technical solutions to the border issues, saying the necessary technology does not exist yet.
Mr Johnson, however, told BBC political editor Laura Kuenssberg: "There are abundant technical fixes that can be introduced to ensure you don't have to have checks at the border.
"There is no single magic bullet... but what there is is a wealth of experience, a wealth of solutions.
"What's changed now is that there's a real positive energy about getting it done."
He also insisted the UK government is never going to impose checks or a hard border "of any kind" in Northern Ireland.
Meanwhile, he reiterated that as prime minister he would ensure the UK leaves by the current Brexit deadline.
He stated: "My pledge is to come out of the EU on Halloween, the 31st October. The way to get our friends and partners to understand how serious we are is to abandon the defeatism and negativity that has unfolded us in a great cloud for so long.
"[It's] to prepare confidently and seriously for a WTO or no-deal outcome."
However, he stressed he does not want or believe that the UK will end up exiting without a deal.
Elsewhere, Mr Johnson refused to address the controversy over a row with his partner.
He said he does not talk about "stuff involving my family, my loved ones" - saying it's not fair to "drag them into things".
