If you're interested in the idea of cryonics - having your body frozen after death in the hopes that future science will be able to revive you - then you'll need to sign up with a cryonics organization. There are several different companies that offer cryonics services, and each has a slightly different sign-up process. Here's a rundown of how to sign up for cryonics with the four most popular providers.
To sign up with Alcor, you first need to become a member. You can do this by filling out an online application or contacting the company directly. You'll need to obtain a way of funding your application fee and future cryonics costs - typically through life insurance. Once you're a member, you can fill out Alcor's Cryonic Agreement, which outlines the terms of your cryonic contract. You'll also need to make arrangements for your body to be delivered to Alcor's cryonic facility after death.
The Cryonics Institute has a simpler sign-up process than Alcor. You can either become a lifetime member or annual member. A lifetime member pays a one-time fee, while an annual member pays yearly dues. Once you're a member, you'll need to fill out the CI's Cryonic Agreement. Neither of these include memberships include the cost of having your body delivered to the Cryonics Institute. For that, you need a Local Help Rider.
Cryonics Institute offers two different membership plans - whole body and neuro. A whole body membership includes the freezing of your entire body, while a neuro membership only includes the freezing of your brain. The whole body membership is more expensive, but it gives you the best chance of being revived in the future.
To sign up with Tomorrow Biostasis, you'll first need to become a member. You can do this by filling out an online application or contacting the company directly. Once you're a member, you can fill out Tomorrow Biostasis's Cryonic Agreement, which outlines the terms of your cryonic contract. Unlike Alcor and Cryonics Institute, Tomorrow Biostasis will arrange for a medical team to transport you from your place of death to their state-of-the-art cryo-preservation facility in Zurich, Switzerland.
Kriorus offers both human and pet cryo-preservation and is the only cryo-preservation company in Russia. Like the other companies here, you can sign-up if you are in their service area and pay their membership fees. Kriorus has frozen 87 people so far and several pets.