1. A system comprising: a non-transitory memory storing instructions; and one or more hardware processors coupled to the non-transitory memory and configured to read the instructions from the non-transitory memory to cause the system to perform operations comprising: displaying, on a graphical user interface (GUI) of the system, a list of contacts of a user; receiving a selection of a contact from the list of contacts; providing, via the GUI, available funding sources to the user; receiving a selection of a funding source from the available funding sources from the user; providing, via the GUI, a payment indicator; receiving, via the GUI, a touch input that is associated with the payment indicator; determining a transaction amount based on a time-dependent measurement of the touch input; and providing, for display via the GUI, the transaction amount along with the payment indicator.
1. A system comprising: a non-transitory memory storing instructions; and one or more hardware processors coupled to the non-transitory memory and configured to read the instructions from the non-transitory memory to cause the system to perform operations comprising: displaying, on a graphical user interface (GUI) of the system, a list of contacts of a user; receiving a selection of a contact from the list of contacts; providing, via the GUI, available funding sources to the user; receiving a selection of a funding source from the available funding sources from the user; providing, via the GUI, a payment indicator; receiving, via the GUI, a touch input that is associated with the payment indicator; determining a transaction amount based on a time-dependent measurement of the touch input; and providing, for display via the GUI, the transaction amount along with the payment indicator. 8. The system of claim 1 , wherein the operations further comprise receiving an input, via the GUI, that indicates an approval of the transaction amount.