Accelerated checkout

Below the add-to-bag button, Signal renders the accelerated checkout buttons — Shop Pay, PayPal, Apple Pay, Google Pay, whichever your shop has enabled. One tap takes a returning shopper from the product to a pre-filled checkout.

Turning it on

There’s one switch, on the Buy buttons block:

Setting	Type	Default	What it does
Show accelerated checkout	Checkbox	On	Renders the accelerated checkout buttons

Which buttons appear, in what order, and how they look is decided by Shopify from your payment settings and the shopper’s own browser and wallet — not by the theme. A shopper on a Mac with no Apple Pay card sees a different set from one on an iPhone with three.

To change what’s offered: Settings → Payments in admin, and Settings → Checkout for Shop Pay.

It lives inside Buy buttons

You won’t find this as a block you drag into place on its own. It sits inside Buy buttons, alongside quantity and add-to-cart, and moves with it.

If you add it from the Add block picker by itself, it renders nothing — not a bug, and not something you can configure around.

Why, for developers

Shopify’s payment_button filter needs the form object, and a theme block can’t reach the form of a form it didn’t open. Buy buttons owns {% form 'product' %} and passes it down:

{% content_for 'block', type: 'accelerated-checkout', id: 'accelerated-checkout', form_obj: form %}

Standalone there’s no form object to render from, hence nothing on the page.

Accelerated checkout and the cart

These buttons bypass the cart. A shopper tapping Shop Pay on a product page checks out with that product, at the quantity and selling plan currently selected, and nothing else that was in their bag.

That’s how Shopify’s express checkout works and it’s the right behaviour for the buyer who already knows what they want. It’s worth knowing when you’re reading the data, though: accelerated checkout orders are usually single-line.

Tip

On a store where most shoppers buy one piece at a time — which is most drop stores — leave these on. On a store where a typical order is three or four items, consider switching them off on the product page and relying on the cart drawer’s checkout button instead, so the bag doesn’t get skipped.

Shop Pay Installments

Signal does not render Shop Pay’s instalment messaging on the product page — the payment_terms banner (“4 interest-free payments of …”) isn’t part of the theme.

Note

Shop Pay itself still appears in the accelerated checkout row when it’s enabled, and a shopper who uses it is offered instalments at checkout if they’re eligible. What’s missing is the pre-purchase messaging on the product page. If you want it, Shopify’s Shop Pay Installments banner can be added as an app block in the buy column, or through the Custom Liquid block using the payment_terms filter — though the filter needs the product form object, so an app block is the practical route.

What Signal doesn’t do

There’s no “Buy it now” button that submits the form straight to checkout. The native accelerated buttons do that job better: they carry the shopper’s saved details, and they’re the buttons shoppers recognise. One add-to-bag button plus the real express buttons is the whole set.