Certainly. I'll leave the fine details to people who are far more educated on that than I am.
Individuals who would qualify for telephone voting would be individuals who have barriers to polling stations. These would be individuals like Mr. Steacy, who have visual impairments and cannot meaningfully cast their ballot on a paper ballot. What's been proposed is that they would receive a verified code. They would be able to call and cast their ballot via phone.
Today most individuals, including those in low socio-economic positions, have access to telephones, so it's quite an accessible means for casting a ballot. You would be able to phone a designated phone number, verify who you are, verify your identity and then cast a ballot for the individual you choose to vote for.