A method, comprising: at an electronic device with one or more biometric sensors: detecting an attempt to initiate a transaction between a user of the electronic device and a device associated with a vendor using a document stored on the electronic device, wherein the document is one of a plurality of documents that are stored on the electronic device and available for use in transactions, and the document is associated with data stored on the electronic device for use in the transaction; and in response to detecting the attempt to initiate the transaction: initiating a facial recognition process for biometrically authenticating a user of the electronic device, including capturing image data with a camera of the electronic device and comparing the captured image data to stored biometric data derived from one or more previously captured images of an authorized user of the electronic device; in accordance with a determination that the captured image data is consistent with the stored biometric data, proceeding with the transaction, wherein proceeding with the transaction includes: displaying, on a display of the electronic device, a representation of the document with which the transaction was initiated; transmitting the data associated with the document from the electronic device to the device associated with the vendor; and in accordance with a determination that the captured image data is not consistent with the stored biometric data, forgoing proceeding with the transaction. detecting an attempt to initiate a transaction between a user of the electronic device and a device associated with a vendor using a document stored on the electronic device, wherein the document is one of a plurality of documents that are stored on the electronic device and available for use in transactions, and the document is associated with data stored on the electronic device for use in the transaction; and in response to detecting the attempt to initiate the transaction: initiating a facial recognition process for biometrically authenticating a user of the electronic device, including capturing image data with a camera of the electronic device and comparing the captured image data to stored biometric data derived from one or more previously captured images of an authorized user of the electronic device; in accordance with a determination that the captured image data is consistent with the stored biometric data, proceeding with the transaction, wherein proceeding with the transaction includes: displaying, on a display of the electronic device, a representation of the document with which the transaction was initiated; transmitting the data associated with the document from the electronic device to the device associated with the vendor; and in accordance with a determination that the captured image data is not consistent with the stored biometric data, forgoing proceeding with the transaction. initiating a facial recognition process for biometrically authenticating a user of the electronic device, including capturing image data with a camera of the electronic device and comparing the captured image data to stored biometric data derived from one or more previously captured images of an authorized user of the electronic device; in accordance with a determination that the captured image data is consistent with the stored biometric data, proceeding with the transaction, wherein proceeding with the transaction includes: displaying, on a display of the electronic device, a representation of the document with which the transaction was initiated; transmitting the data associated with the document from the electronic device to the device associated with the vendor; and displaying, on a display of the electronic device, a representation of the document with which the transaction was initiated; transmitting the data associated with the document from the electronic device to the device associated with the vendor; and in accordance with a determination that the captured image data is not consistent with the stored biometric data, forgoing proceeding with the transaction.