In trying to find a way to force myself to wear heels whilst working, without limiting the ability to do certain things like carrying large objects down stairs or climbing ladders the way strap locks do, I have been experimenting with anklets. The idea is to have a device to rub into the front of the ankle whenever the Achilles tendon is flexed. There is much more movement in this area when walking flat footed, not so much in heels, making it far more comfortable to wear heels when not doing anything that requires total balance and bearing. It also provides the added benefit of not spoiling the look of my pump stilettos , and also does not abrade or scratch the glossy shine. Another benefit (or burden when I can't make up my mind) I can switch styles without having to wait for a heel strap lock device to release. They can be hidden by pant cuffs if I want a discreet look, or uncovered and accentuated by imposing spikey ankle bracelets or other ankle jewelry or cuffs. I often wear non BDSM clothes and like to role play that someone has locked these devices on me to make me choose to wear heels.
Some items I have tried are thick heavy ankle cuffs with magnetic hinge pin, hand cuffs without the chain, and my lockable hose clamp invention.
The handcuffs are too sharp and apparently the wrong shape for this.
The heavy ankle cuffs are great, and will ever so slightly dig a groove when flat walking, but this condition is easily defeated by grabbing and sliding the cuff higher up on the ankle, which would give me a few more pain free steps before it gravitates down again. Also, my set are not lockable, as I can simply slide out the magnetic pin. I could drill out the hole to accommodate a pad lock, but that would ruin the smooth styling and add a hokey look that will remind me of Mr. Bean's Morris Minor Mini Cooper motor car, which he added a padlock and latch to the driver's door.
The hose clamps, with rubber profile gasket seem to work well, though require careful adjustment. They don't have the weight to stay at the bottom of the ankle joint, but tightened just right makes it impossible to slide up and cheat.
With all of these methods, the important thing is that it not be made tight. It doesn't have to be tight enough to cause actual pain, just some awkwardness, which you will find to be relieved by wearing heels, especially in the long run. The point is to make the heels the lesser of these 2 evils. If you do need to remove your heels you will pay for it so, with the chafing and digging action of the cuff.
Still experimenting with this. Any suggestions or warnings will be welcome.