IBM & Wimbeldon: You can't accept t&cs electronically

The whole ticketing system for Wimbeldon is bonkers anyway (a ballot so you have the chance to get a ticket to a random match on a random day? Sounds great!) but this seems absolutely ridiculous:

'Whilst we have introduced online payments, currently there are no plans for online applications: we require you to sign an original form, agreeing to the terms and conditions of the ballot to which we refer should a query arise as to the validity of the application/ applicant.'

So apparently in all their wheelings and dealings, IBM have never come across the HTML "checkbox" element, coupled with a line of text like "By checking this box you agree to the terms and conditions"

How does anyone at IBM think this is good marketing for them? What's their tagline then? "IBM: Keeping you in the 1980s"??