Yes you can!
To use Afterpay in store, simply download the Afterpay app from the app store or visit afterpayit.com.au from your mobile phone.
Once you have created an account, you will be able to request a barcode through the app. You can then present your barcode to the team in store to process your in store purchase with Afterpay!
Your first installment will be paid straight away, followed by 3 equal payments over the next six weeks.
For further information, please visit the Afterpay website here.